Let y = -16x^2 + 160x - 256. Given that y has a maximum value, find:

The value of x giving the maximum value of y
AND
This maximum value of y

differentiate the equation and put it equal to 0, means put dy/dx=0 and find the value of x
which will come out to be 5 which is the maximum value and put value of x in the given equation to get the maximum value of y

What are the basic steps to differentiate an expression?

the differentiation of x^n is written as d(x^n)/dx= na^n-1 and the differentiation of constants is zero

I still don't understand any of this

Then don't reply.

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