Need Help? Read It Master It 5. [0/1 Points] DETAILS PREVIOUS ANSWERS Given that ex ax = e' - e, use this result to evaluate 1 3ex + 2 dx. 5(e3 - e) +8 x Need Help? Read It Watch It Master It 6. [1/1 Points] DETAILS PREVIOUS ANSWERS (F(x ) dx . Write the following expression as a single definite integral of the form laf(x) dx -3 Need Help? Read It Watch It Master It 7. [0/1 Points] DETAILS PREVIOUS ANSWERS Use the midpoint rule with the given value of n to approximate the integral. (Round your answer to four decimal places.) sin ( Vx) dx, n = 4 6 Need Help? Read It Watch It 8. [1/1 Points] DETAILS PREVIOUS ANSWERS Evaluate the integral by interpreting it in terms of areas