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Lesson Posted on 24/09/2018 CBSE/Class 11/Science/Physics CBSE/Class 12/Science/Mathematics/Unit IV: Vectors and Three-Dimensional Geometry

Scalar and vector quantities

Om Prakash Mishra

I am teaching Mathematics and Physics from past more than 12 years in coaching as well as home tuition...

Scalar quantity: Those quantities which have the only magnitude but no direction are called scalar quantities. For instance mass, time, length, distance. Vector quantity: Those quantities which have both, as well as direction, are called vector quantities. For instance Force, weight, displacement, acceleration. Scalar... read more

Scalar quantity: Those quantities which have the only magnitude but no direction are called scalar quantities. For instance mass, time, length, distance.

Vector quantity: Those quantities which have both, as well as direction, are called vector quantities. For instance Force, weight, displacement, acceleration.

Scalar quantities are Sony added and multiplied by the law of algebra, but vectors are added and multiplied by special law of vectors.

Note: Note electric current though has direction but does not obey the law of addition of vectors, so it is also a scalar quantity.

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Answered on 05/09/2018 CBSE/Class 12/Science/Mathematics

Which hardware device I should use to write mathematics sums in online classes?

 

Shivam Trivedi

Video recording ( web cam )
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Answered on 05/09/2018 CBSE/Class 12/Science/Mathematics

Which hardware device I should use to write mathematics sums in online classes?

 

Mariat J.

Mathematics Teacher

Wacom Pen Tablet
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Answered on 30/08/2018 CBSE/Class 12/Science/Mathematics

Jaswant

400 per Hour
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Answered on 15/10/2018 CBSE/Class 12/Science/Mathematics

Om Prakash Mishra

Mathematics Tutor

600-800 per hour
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Lesson Posted on 04/08/2018 CBSE/Class 12/Science/Mathematics

Understanding Limits Through Graphs

Abhilash K S

Faculty for Engineering Mathematics in a private tuition center. Faculty for CAT/GMAT/GRE/SAT. Faculty...

Maths is often taught mechanically. Just consider the case of limits. Most of the standard textbooks define, the limit is the value that a function "approaches" as the input "approaches" some value. This neither gives the "feel" of maths, nor a beginner can appreciate its "beauty". A graphical approach... read more

Maths is often taught mechanically. Just consider the case of limits. Most of the standard textbooks define, the limit is the value that a function "approaches" as the input "approaches" some value.

This neither gives the "feel" of maths, nor a beginner can appreciate its "beauty". A graphical approach is often more insightful.

Consider, the graph of f(x)=1/x.

In this case, at X=0, the value of f(x) approaches minus infinity if we approach from the negative side of the number line and f(x) approaches plus infinity if we approach from the positive side of the number line. Essentially, the limit doesn't exist as LHL is minus infinity and RHL is plus infinity.

Now to make it more clear consider the graph of f(x)=1/x^2

Here at x=0, both LHL and RHL approaches plus infinity. Hence limit exists as plus infinity at x=0.
Just by observing these two graphs a beginner gets an insight into when a limit is said to exist and when not.

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Answered on 04/08/2018 CBSE/Class 12/Science/Mathematics

Debesh Mukherjee

Mathematics & Statistics Teacher

Rs 300 per hour of Teaching/Coaching Mathematics which I usually charged for each student. = Debesh Mukherje
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Answered on 20/08/2018 CBSE/Class 10/Mathematics/UNIT III: Coordinate Geometry/Coordinate geometry/Class 10 Difference between two points and section formula CBSE/Class 12/Science/Mathematics

Ashwani Pandey

Teacher

There is only one solution.
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Answered on 19/07/2018 CBSE/Class 10/Mathematics/UNIT III: Coordinate Geometry/Coordinate geometry/Class 10 Difference between two points and section formula CBSE/Class 12/Science/Mathematics

How many solutions are there for 

F(x)= 2^(x) - x-2

Ankita Das

Tutor

the number of solution is x
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Answered on 05/08/2018 CBSE/Class 10/Mathematics/UNIT III: Coordinate Geometry/Coordinate geometry/Class 10 Difference between two points and section formula CBSE/Class 12/Science/Mathematics

How many solutions are there for 

F(x)= 2^(x) - x-2

Manu BK

Tutor

Answers 2 Comments
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