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Given the function f (x) = x2+4 or, what is the slope of the tangent line to the curve at x = 0?Find the equation to the tangent line to the curve f (x) = e* at x = 0 and use it to approximate e-2. Round your final answer to 2 decimal places.A cylindrical can is to be designed so that it has volume equal to 32x cubic inches. Find the radius, r, for which the surface area of the can is minimized