Write the expression in the standard form a + bi.If z = 5 - 4i, evaluate z
.
A. 25 - 16i2
B. 25 - 16i
C. 9
D. 41
Answer: D
Mathematics
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Find the limit.
cot-1 x
A. 
B. 0
C. -?
D.
| ?? |
Mathematics
Solve the problem.If u = 
and v = 
, and w = 
, evaluate (u + v) ? w.
A. 7 B. 5 C. 0 D. -4
Mathematics
Find an upper bound for the magnitude |E| of the error in the approximation f(x, y) ? L(x, y) at the given point over the given region R.
at (1, 1, 1); R: |x - 1| ? 0.1, |y - 1| ? 0.1, |z - 1| ? 0.1
A. |E| ? 0.0165 B. |E| ? 0.0248 C. |E| ? 0.0198 D. |E| ? 0.0186
Mathematics
The graph of a function is given. Decide whether it is even, odd, or neither.
A. even B. odd C. neither
Mathematics