Decide whether the relation is a function.{(-6, -8), (-2, -2), (-1, 1), (5, -3)}
A. Function
B. Not a function
Answer: A
Mathematics
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Find the indicated series by the given operation.Show that by differentiating term by term the expansion of 
the result is the expansion for 
.
A. 
= 2
B. 
= 2
C. 
= 2x(1 + x2 - x4 + x6 - . . .)
D. 
= 2x(1 - x2 + x4 - x6 + . . . )
Mathematics
Consider these figures:
Which figure above, if any, is topologically equivalent to the given figure? Identify the topologically equivalent figure by letter.An unzipped jacket
A. A B. B C. C D. None of these
Mathematics
Use the fundamental identities to simplify the expression.sin ? cos ? sec ? csc ?
A. 1 B. sec2? C. tan2? D. csc2?
Mathematics
Solve the formula for the specified variable.A = P(1 + nr) for r
A. r = 
B. r = 
C. r = 
D. r = 
Mathematics