**Unformatted text preview: **10/03/2001 WED 17:37 FAX 6434330 MOFFITT LIBRARY
George M. Bergman Fall 1998, Math IAW 13 November, 1998
891 Evans Second Midterm — make-up exam 3:10—4:00 PM 1. (50 points, 10 points apiece) Find the following. sinh x — sinh 2 (a) 1th —> 2 sinh 2x — Sinh 4 ' . ln cos 5x
(in) 11111an —x—2 (c) An antiderivative of the function 1 + ex + 2 sin x (d) A function satisfying the differential equation f ’(x) = 2 _f(x), and such that f( 1) +
f’(1)+ f”(1)= 1- i - cos x
(e) dx 8111 (x ) 2. (25 points) (a) (10 points) State the principle of mathematical induction. (b) (15 points) Suppose f is an inﬁnitely differentiable function (i.e., a function such that
f’, f”, , f‘"), all exist), which satisﬁes the equation f’(x) = 2 f(x) + 1. Prove that
for all positive integers :1, one has f (")(x) = 2n f(x) + 2n"1. Here f (n ) means the
nth derivative of f, and f (0) means f. Suggestion: Use mathematical induction. (Do not try to solve the given equation.) 3. (25 points) (a) (15 points) Give the information asked for below about the curve 31 =
(1n x)2. If any of the items asked for does not exist, write “None”. (For the limit, write
“None” only if the function does not approach either a real number or i co.) (b) (10 points) Sketch the curve. Your sketch does not need to reﬂect accurate
numerical values of the coordinates of the various transition points, as long as it correctly
shows the order in which these occur. domain: x-intercept(s): y—intercept(s): increasing on interval(s): decreasing on interval(s): concave up on interval(s): concave down on interval(s): vertical asymptote(s): lim extrema: x—)ooy= I001 ...

View
Full Document