I need the part B in the first question and the last part of the second question answered.
NOTE: Please show work and have answers either typed or written legibly. Also, PLEASE ANSWER BOTH QUESTIONS!!! Thank you!
(a) Write an expression for the function, F(x), if it is known that F(x) = e-x- and F(0)-4 . Give your answer using the form below. Hint: See example 5 in section 6.1 of the textbook F(x) = C + A(t) dt c=-4 A(t) = | e (b) Estimate the value F(3) using the Left Hand Riemann sum with n = 20, (Round your answer to three decimal places.) F(3)
