Perform the indicated operation and simplify. Write the answer in the form a + bi.

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

Answer: C

Mathematics

Find the angle between u and v in radians.u = -8j and v = 8i - 8k

A. 1.57 B. 1.66 C. 0.09 D. 0.00

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Mathematics

Find the linear approximating polynomial for the function centered at a.f(x) = tan x, a = ?

A. p1(x) = x + ? B. p1(x) = x - ? C. p1(x) = x - 4? D. p1(x) = 4x - ?

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Mathematics

Find the composition. If f(x) = 6x + 6 and g(x) = x + 5, find (f ? g)(x)

A. 6x2 + 36x + 30 B. 6x + 11 C. 6x + 36 D. 6x2 + 36

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Mathematics

Solve the equation.x2 - 81 = 80x

A. {-1, 81} B. {-9} C. {-9, 9} D. {-81, 1}

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Mathematics