Evaluate the integral.
dx
A. (cos-1 x)7 + C
B. 
+ C
C. 
+ C
D. 6(sin-1 x)5 + C
Answer: C
Mathematics
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Solve the radical equation.
- 
= 1
A. {3} B. {-3, -1} C. {3, -1} D. no real solution
Mathematics
Find the exact value of the expression.cos 
cos 
+ sin 
sin 
A. 1
B. 
C. 
D. 
Mathematics
Solve the system of equations.5x + 2y + z = -112x - 3y - z = 177x + y + 2z = -4
A. (0, -6, 1) B. (-3, 0, 4) C. (3, 0, -4) D. (0, 6, -1)
Mathematics
Find the length of the third side of the right triangle. Where appropriate, give both an exact answer and an approximation to three decimal places.
A. 19 B. 11 C. 14 D. 20
Mathematics