Solve the equation.
= 1 + 
A. ?
B. {6, -8}
C. {-6, 8}
D. {-12, 8}
Answer: B
Mathematics
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Use integration by parts to establish a reduction formula for the integral.
A. 
= - 2xn-1 e- x2 - 2(n - 1) 
B. 
= n xn-1 e- x2 + 2n 
C. 
= - 
xn e- x2 + 
D. 
= - 
xn-1 e- x2 + 
Mathematics
Find the exact value of the real number y.y = arccos 
A. - 
B. 
C. 
D. 
Mathematics
Solve the exponential equation by taking the logarithm on both sides. Use a calculator to obtain a decimal approximation, correct to four decimal places, for the solution.e(x + 7) = 2
A. -6.0837 B. 2.1972 C. -4.8028 D. -6.3069
Mathematics
Divide. If the division is not possible, write "undefined."
A. 5 B. 4 C. 3 R4 D. 3 R3
Mathematics