Posted by Anonymous on Tuesday, August 7, 2012 at 4:53pm.
(integral) e^3x dx
A. e^3x+C
B. 1/3e^3x+C
C. e^4x+C
D. 1/4e^4x+C
Evaluate (integral) dx/(Square root 98xx^2)
A. sin^1(x+4/5)+C
B. sin^1(x4/5)+C
C. Ln(Square root 98xx^2)+C
D. Ln(82x)+C

Calculus  Anonymous, Tuesday, August 7, 2012 at 5:39pm
if u = 3x you have integral e^u du/3, so (B)
since 98xx^2 = 25  (x+4)^2, and integral du/sqrt(a^2u^2) = arcsin(u/a), you have arcsin u/5, so (A)
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