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Practice Test 4 Business Calculus
integral xn dx = (xn+1)/(n+1)+C integral dx =; x+C
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
Evaluate.
1) integral (7x2+1) d x; A)14x+C B)x+C C)7/3x3+x+C D)7/3x3+C; = 7underbrace (x2+1)/(2+1) + x+C = 7(x3)/3+x+C;; 2) integral over 20 of dx; A)10x2 B)20x+C C)0 D)20+C; = 20x+C;
1) C
2) B
\[\begin{align*}& ext{3)}~~\int7x^{-3}\, ext{d}x\\&\
begin align* 4) integral 12x3root(x) d x; textcircled A 8/3x9/2+C; = 12 integral x3· x1/2 d x = 12 integral x3+1/2 d x =; = 12 integral x7/2 d x = 12(x7/2+1)/(7/2+1)+C; = (12xfrac 9 2)/(frac 9 2)+C = frac 4 12 ·frac 2 9 xfrac 9 2+C = frac 8 3 xfrac 9 2+Cend align*