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Answered 4 days ago Language/Spoken English CBSE/Class 10/English Exam Coaching/Foreign Education Exam Coaching/Advanced Placement Tests Coaching/English Language & Composition +8 CBSE/Class 6/Science/Sorting Of Materials into Group CBSE/Class 2/Maths/Mental Mathematics CBSE/Class 1/Maths CBSE/Class 10/Social Studies CBSE/Class 9/Social Studies/History/Socialism in Europe and the Russian Revolution CBSE/Class 8/Social Studies/Civics/Law and Social Justice CBSE/Class 5/EVS/Animals CBSE/Class 4/EVS/Matter less

Ansha A.

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I am intrested to take tution classes for class 1st to 10 th.please inform me
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Lesson Posted 3 days ago CBSE/Class 10/Mathematics CBSE/Class 10 CBSE/Class 10/Mathematics/Polynomials

Polynomials {Class-10 / CBSE}

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"Optimize Coaching Classes " is Delhi's leading coaching institute for Mathematics & Science (Class-IX/X)...

Polynomial - ConceptA polynomial is a mathematical expression consisting of the sum of terms, each term including a variable or variables raised to a power and multiplied by a coefficient. Zeroes of a Polynomial. Mathematically: K is said to be zero of a polynomial p(x) if p(k) = 0 Graphically: Values... read more

Polynomial - Concept

A polynomial is a mathematical expression consisting of the sum of terms, each term including a variable or variables raised to a power and multiplied by a coefficient.

 Zeroes of a Polynomial.

  • Mathematically: K is said to be zero of a polynomial p(x) if p(k) = 0
  • Graphically: Values of x coordinates where Polynomial P(x) crosses/touches the x-axis are called zeros of polynomial P(x).

Some Graphs:

  •     Graph of a linear polynomial ax + b is a straight line.
  •     Graph of a quadratic polynomial p(x) = ax2+ bx + c is a parabola open upwards like ∪, if a > 0.
  •     Graph of a quadratic polynomial p(x) = ax2+ bx + c is a parabola open downwards like ∩, if a > 0.
  •     In general, a polynomial p(x) of degree n crosses the x-axis at at-most n points.


The relationship between zeroes and the coefficients of a Quadratic Polynomial :

  •     If α, β are zeroes P(x) = ax2 + bx + c, then


                           

  •     If α, β are roots of a quadratic polynomial p(x), then.

P(x) =K {x2 – (sum of roots) x + product of roots}

P(x) = K {x2 + (α+ β) x +(αβ)}

 
The relationship between the zeroes and the coefficients of a Cubic Polynomial

If α, β and γ are zeroes of a cubic polynomial p(x),

P(x) = K {x3 – (sum of zeroes) x2 + (sum of product of zeroes) x – (product of zeroes)}

P(x) = K {x3 – (α + β + γ) x2 + (αβ + βγ + αγ) x – (αβγ)}

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Lesson Posted 2 days ago CBSE/Class 10 CBSE/Class 10/Science/Electricity Electrostatic Potential

Electric Potential

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"Optimize Coaching Classes " is Delhi's leading coaching institute for Mathematics & Science (Class-IX/X)...

Electric Potential: An object rose against gravity, gains some gravitational potential energy proportional to the work done required to raise the object against the gravitational pull. Similarly, in an electric field, when a charged object is moved against the electric field it gains some amount of... read more

Electric Potential:

  • An object rose against gravity, gains some gravitational potential energy proportional to the work done required to raise the object against the gravitational pull. Similarly, in an electric field, when a charged object is moved against the electric field it gains some amount of energy which is defined as the electric potential energy.
  • The magnitude of this electric potential energy depends on the amount of work done on the object in moving the object from one point to another against the electric field.
  • NOTE: - It is assumed that electric potential of a charge at infinity is zero.
  • Definition: An electric potential (also called the electric field potential) is the amount of work needed to move a unit positive charge from infinity to a specific point inside the electric field.
  • If work done in moving a positive charge Q from infinity to a point in an electric field is W, then   Electric Potential (V)=Work Done(W)/ Charge (Q)
  • Units of Electric Potetial= Joule/coulomb or volt (v)
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Answered 4 days ago CBSE/Class 10/Mathematics

What is bodmas exception

Mahaaletshmi Radhakrishnan

Mathematics, addition of our knowledge, subtract our mistakes, multiples our skill, divides our ideology...

BODMAS Bracket followed by oder of division, multiplication, addition and subtraction Eg; If 30-(15-12)+(18/2) 1) (15-12) according to BODMAS rule First solve the sum inside the bracket and calculate it one orders manner (15-12)= 3 (18/2) = 9 Thn sub in 30-(15-12)+(18/2) =30-(3)+(9) =27+9 (or)... read more

BODMAS 

Bracket followed by oder of division, multiplication, addition and subtraction 

Eg;  

If 30-(15-12)+(18/2)

1)  (15-12) according to BODMAS rule 

First solve the sum inside the bracket and calculate it one orders manner

(15-12)= 3

(18/2) = 9

Thn sub in 30-(15-12)+(18/2)

=30-(3)+(9)

=27+9 (or)  30+6

=36

According to BODMAS rule answer is 36

Try it with n number if examples 

1)( 42-18)-3(18-2)+16-18/6

 

 

Try

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Lesson Posted 4 days ago CBSE/Class 9/Science CBSE/Class 9/Science/Matter in our surroundings

Is particles of matter have space between them? Class IX- Chap-1

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"Optimize Coaching Classes " is Delhi's leading coaching institute for Mathematics & Science (Class-IX/X)...

Activity: When we dissolve salt/sugar in water, the particles of salt/sugar get into the spaces between particles of water. Equipment’s Required: - Beaker, Water, Salt/ Sugar, and a glass rod. Working: Take a 100 mL beaker. Fill half the beaker with water and mark the level of water. Dissolve... read more

Activity: When we dissolve salt/sugar in water, the particles of salt/sugar get into the spaces between particles of water.

Equipment’s Required: - Beaker, Water, Salt/ Sugar, and a glass rod.

Working:

  • Take a 100 mL beaker.
  • Fill half the beaker with water and mark the level of water.
  • Dissolve some salt/ sugar with the help of a glass rod.
  • Notice the water level.

Observations:

  • When sugar/salt is dissolved in water, the particles of sugar disappear in water. This happens because particles of sugar/salt get adjusted in the spaces between the particles of water.
  • Additionally, you will notice that there is no rise of water level takes place when one or two teaspoons of sugar is added in a glass of water, this is because sugar particles get adjusted in the space between the particles of water and no rise in the water level comes in result.
  • This activity shows us that Matters are made of small particles. And there is space between these particles.
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Lesson Posted 4 days ago CBSE/Class 9/Science CBSE/Class 9/Science/Matter in our surroundings

How Small are These Particles of Matter?

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"Optimize Coaching Classes " is Delhi's leading coaching institute for Mathematics & Science (Class-IX/X)...

The particles of matter are very small –they are small beyond our imagination!!!! Let us observe an activity, Activity: Take 2-3 crystals of potassium permanganate and dissolve them in 100 mL of water. Equipment’s Required: - Beaker, 100ml-Water, crystals of potassium permanganate,... read more

The particles of matter are very small –they are small beyond our imagination!!!!

Let us observe an activity,

 

Activity: Take 2-3 crystals of potassium permanganate and dissolve them in 100 mL of water.

Equipment’s Required: - Beaker, 100ml-Water, crystals of potassium permanganate, & a glass rod.

Working: -

  • Take 2-3 crystals of potassium permanganate and dissolve them in 100 mL of water. Note- We can also use Dettol instead of Potassium Permanganate.
  • Take out approximately 10 mL of this solution and put it into 90 mL of clear water.
  • Take out 10 mL of this solution and put it into another 90 mL of clear water.
  • Keep diluting the solution like this, 5 to 8 times.

Conclusion:

  • we conclude that there must be millions of tiny particles in just one crystal of potassium permanganate, which keeps on dividing themselves into smaller and smaller particles. Ultimately a stage is reached when the particles cannot divide further into smaller particles.
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Asked 22 hrs ago CBSE/Class 10/English

Hello, I am Ram. I am a new user, want to know how can get any person to talk in english. I want to... read more

Hello, I am Ram. I am a new user, want to know how can get any person to talk in english.

I want to improve my speaking skill in english so you provide me how can i get any tutor or any person for talking. 

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Lesson Posted 1 day ago CBSE/Class 9/Science CBSE/Class 9/Science/Matter in our surroundings CBSE +1 CBSE/Class 9 less

Are Particles of Matter Attract Each Other?

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"Optimize Coaching Classes " is Delhi's leading coaching institute for Mathematics & Science (Class-IX/X)...

Are Particles of Matter Attract Each Other? YES, Particles of matter attract each other. Let us observe some activities, Activity: Make four groups and form a human chain Group1: The First group should hold each other from the back and lock arms like Idu-Mishmi dancers. Group2: The Second group... read more

Are Particles of Matter Attract Each Other?

YES, Particles of matter attract each other.

Let us observe some activities,

 

Activity: Make four groups and form a human chain

Group1: The First group should hold each other from the back and lock arms like Idu-Mishmi dancers.

Group2: The Second group should hold hands to form a human chain.

Group3: The Third group should form a chain by touching each other with only their fingertips.

Group4: The fourth group of students should not hold hands or bounded even with their fingertips.

Observations:

  • The fourth group of students was the easiest to break. This is because students are not holding hands or bounded even with their fingertips.

Conclusions:

  • There was no bonding force present in the fourth group.
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Asked 3 days ago CBSE/Class 11/Science/Physics Tuition/BTech Tuition/BTech Electrical & Communication Engineering

If any one in Ahmedabad searching for Physics/Mathe/ECE Tutor.Can contact me.

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Answered on 07 Feb CBSE/Class 11/Humanities/Sociology Tuition/Class XI-XII Tuition (PUC)

Who is regarded as the father of sociology? Why?

Sujoy D.

Tutor

The French philosopher Auguste Comte (1798–1857)—often called the “father of sociology”—first used the term “sociology” in 1838 to refer to the scientific study of society. He believed that all societies develop and progress through the following stages: religious,... read more

The French philosopher Auguste Comte (1798–1857)—often called the “father of sociology”—first used the term “sociology” in 1838 to refer to the scientific study of society. He believed that all societies develop and progress through the following stages: religious, metaphysical, and scientific.Auguste Comte is called the father of sociology because he coined the word 'Sociology' in 1830, for that branch of science which studied human behaviour. In fact, he created a hierarchy of sciences in which he put sociology at the top. He argued that sciences dealing with simple phenomena were first to arrive.

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