Question

if 2x-7-5x2 has maximum value at x= a then a=

Answer 1

Answer:

y=−5x  

2

+2x−7

Differentiating the above equation with respect to x, gives us

dx

dy

=−10x+2

For maximum,  

dy/dx

=0

Or

2−10x=0

Or

x=  1/5

Hence the above expression reaches its maximum value at x=  1/5

Step

-by-step explanation: