9. [1/1 Points] DETAILS MY NOTES TANAPCALCBR10 5.R.033. Find the second derivative of the function. y = In(8x + 5) y' = 10. [0/1 Points] DETAILS MY NOTES TANAPCALCBR10 5.R.037. Use logarithmic differentiation to find the derivative of the following. f (x) = (2x3 + 5)(x2 + 3)3 f' ( x ) = 11. [0/1 Points] DETAILS MY NOTES TANAPCALCBR10 5.R.039. Find an equation of the tangent line to the graph of y = ex at the point (5, e-20). y = 12. [1/1 Points] DETAILS MY NOTES TANAPCALCBR10 5.R.043. Find the absolute extrema of the function f(t) = te . (Enter your answers as a comma-separated list. If an answer does not exist, enter DNE.)13. [0/2 Points] DETAILS MY NOTES TANAPCALCBR10 5.R.044. Find the absolute extrema of the function g(t) = on[7, 8]. absolute minimum value absolute maximum value In(t) t 14. [0/2 Points] DETAILS MY NOTES TANAPCALCBR10 5.5.058. Consider the following function. fxy = NG X (a) Determine the interval(s) where the function is concave upward. (Enter your answer using interval notation. If an answer does not exist, enter DNE.) (b) Determine the interval(s) where the function is concave downward. (Enter your answer using interval notation. If an answer does not exist, enter DNE.) 15. [0/2 Points] DETAILS MY NOTES TANAPCALCBR10 5.4.038. Determine the intervals of concavity for the graph of the function f(x) = xe*. (Enter your answers using interval notation.) concave upward concave downward