Question

N Find the value of x for which y=40x – 5x7 has maxima? A. 1 3 B. 2 C. 3 D. 4​​

Answer 1

Explanation:

N Find the value of x for which y=40x – 5x7 has maxima? A. 1 3 B. 2 C. 3 D. 4

Answer 2

Answer:

$y=2x−7−5x 2 y=−(x− 51​ ) 2 −4, which is maximum at x= 51​ Hence, option 'B' is correct .$

Explanation: