Evaluate the function.Find f(a - 3) when f(x) = x2 + 4
A. a2 - 6a + 9
B. a2 + 1
C. a2 + 9
D. a2 - 6a + 13
Answer: D
Mathematics
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Rewrite the expression in terms of exponentials and simplify the results.cosh 2x - sinh 2x
A. e-2x B. e2x - e-2x C. -2x D. 2e-2x
Mathematics
Find the limit.
(
- 2)
A. does not exist B. -2 C. 0 D. 2
Mathematics
Multiply. Assume that no radicands were formed by raising negative numbers to even powers.4
(
+ 
)
A. 4
+ 7
B. 4
+ 28
C. 28
+ 28
D. 4
+ 7
Mathematics
Indicate whether the statement is true always, sometimes, or never.The product of a pair of complex conjugates (with b ? 0) is the difference of the squares of the real and imaginary parts.
A. Always B. Never C. Sometimes
Mathematics