Answer the question, concerning the use of substitution in integration.If we use u = x2 as a substitution to find 
then which of the following would be a correct result?
A. 
B. 
C. 
D. None of the above
Answer: C
Mathematics
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Use spherical coordinates to find the volume of the indicated region.the region enclosed by the cone 
between the planes 
and 
A. 
?
B. 
C. 
D. 
?
Mathematics
Factor the trinomial.36 - 13x + x2
A. (x - 4)(x - 9) B. (x - 4)(x + 9) C. (x - 36)(x - 1) D. (x + 4)(x + 9)
Mathematics
Find the interval of convergence of the series.
A. -9 < x < 9 B. 7 < x < 9 C. x < 9 D. 7 ? x < 9
Mathematics
Use the properties of logarithms to find the exact value of the expression. Do not use a calculator.log7 21 - log7 3
A. 7 B. 3 C. 21 D. 1
Mathematics