Practicing Success

Target Exam

CUET

Subject

-- Mathematics - Section B2

Chapter

Calculus

Question:

A printed page is to have total area of 80 sq.cm with margin of 1 cm at the top and on each side and margin of 1.5 cm at the bottom. Which of the following are true?

(A) Area of printed portion; $A= (x-2) \left(y-\frac{5}{2}\right)$

(B) Printed area is maximum at $x= 18 \, cm $

(C) Printed Area function $A(x)= 85-\frac{5x}{2}-\frac{160}{x}$

(D) Printed area is maximum at y = 8 cm

(E) Dimension of printed page are 10 cm & 8 cm

Choose the correct answer from the options given below :

Options:

(A), (B), (C) only

(A), (C), (E) only

(B), (C), (D) only

(C), (D), (E) only

Correct Answer:

(A), (C), (E) only