Which expression is equivalent to 5(8z)
1 answer:
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The function
... f(x) = (x+2)/(x-1) = 1 + 3/(x-1)
is symmetrical about the line y=x, hence is its own inverse.
We can evaluate the desired derivative directly.
... f'(x) -3/(x-1)²
so f'(2) is
... f'(2) = -3/(2-1)²
The equation for surface area is: 
. To get r, you must use Pythagorean theorem. r is found to be 45. This means after you plug it in, you get about 13571.68