Question

If 5x/3-4=2x/5,then the numerical value of 2x-7is

Answer 1

Step-by-step explanation:

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Answer 2

Answer:

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Asked on December 30, 2019 bySwaroopa Charitha

If y=2x−7−5x2 has maximum value at x=a, then the value of a is

A

−51

B

51

C

534

D

−534

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ANSWER

y=−5x2+2x−7

Differentiating the above equation with respect to x, gives us

dxdy=−10x+2

For maximum, dxdy=0

Or

2−10x=0

Or

x=51

Hence the above expression reaches its maximum value at x=51.

Step-by-step explanation:

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