Evaluate the integral.
?
?
A. 
B. 
C. 
D. 
E. 
Answer: B
Mathematics
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Solve the equation in the complex number system.x3 = -27i
A. 3(cos90° + i sin 90°), 3(cos 180° + i sin180°), 3(cos 270° + i sin 270°) B. 3(cos 30° + i sin 30°), 3(cos 60° + i sin 60°), 3(cos 90° + i sin 90°) C. 3(cos 90° + i sin 90°), 3(cos 210° + i sin 210°), 3(cos 330° + i sin 330°) D. 3(cos 210° + i sin 210°), 3(cos 270° + i sin 270°), 3(cos 330° + i sin 330°)
Mathematics
Solve the system of equations.7x1 + 7x2 + x3 = 1 x1 + 8x2 + 8x3 = 89x1 + x2 + 9x3 = 9
A. (0, 1, 0) B. (0, 0, 1) C. (1, -1, 1) D. (-1, 1, 1)
Mathematics
Solve the application problem.The product of two positive consecutive odd integers is 99. Find the integers.
A. -11, 9 B. -11, 11 C. 9, 11 D. -11, -9
Mathematics
Differentiate.f(x) = e5x
A. e5x
B. 
e5x
C. 5ex
D. 5e5x
Mathematics