x And y Are Real Numbers s.t 2 < x < 3 And -8

Sujoy Das

07/02/2018 2 0 0

Question:

x and y are real numbers s.t 2 < x < 3 and -8<y:

A) x^2 y
B) xy^2
C) 5xy

 

Solution:

 

xY^2 is postive. So out of scope

X^2 Y has min value of 4 * -8 = - 32

and 5xy can have min value of 5*2* -8 = - 80

(I know they arent equal. But by approaximation it can be inferred)

Also y has to be of odd degree and thn maximise x.

• Bangalore
• Chennai
• Delhi
• Hyderabad
• Mumbai
• Pune
• Kolkata
• Gurgaon
• Ahmedabad
• Noida

UrbanPro.com is India's largest network of most trusted tutors and institutes. Over 55 lakh students rely on UrbanPro.com, to fulfill their learning requirements across 1,000+ categories. Using UrbanPro.com, parents, and students can compare multiple Tutors and Institutes and choose the one that best suits their requirements. More than 7.5 lakh verified Tutors and Institutes are helping millions of students every day and growing their tutoring business on UrbanPro.com. Whether you are looking for a tutor to learn mathematics, a German language trainer to brush up your German language skills or an institute to upgrade your IT skills, we have got the best selection of Tutors and Training Institutes for you. Read more