Simplify the expression using the imaginary unit i.- 

A. -10
B. -10i
C. 10i
D. 10


Answer: B

Mathematics

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Evaluate the integral.

A. ?2 cos 3
B. ?2 cos 3
C. ? cos 3
D. ? cos 3

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Find the indicated sum. Find the sum of the first 7 terms in the geometric series 3 + 9 + 27 + . . .

A. 1122 B. 3279 C. 9840 D. 1092

Mathematics

Write the expression in the standard form a + bi.(1 + i)3

A. 2 + 2i B. -2 + 2i C. -2 + i D. -2 - 2i

Mathematics

Simplify by writing the expression with positive exponents. Assume that all variables represent nonzero real numbers.

A.
B.
C.
D. 1

Mathematics