Find the domain of the function.f(x) = 
A. 
B. {x|x ? 9}
C. 
D. {x|x ? -9}
Answer: D
Mathematics
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Write the number in scientific notation.0.00207
A. 2.07 × 10-4 B. -2.07 × 103 C. 2.07 × 10-3 D. 2.07 × 10-2
Mathematics
Find all the first order partial derivatives for the following function.f(x, y, z) = ln (xy)z
A. 
= - 
; 
= - 
; 
= ln (xy)
B. 
= 
; 
= 
; 
= ln (xy)
C. 
= 
; 
= 
; 
= z ln (xy)z-1
D. 
= z ln 
; 
= zln
; 
= ln (xy)
Mathematics
Perform the indicated operation.Let C = 
. Find (1/2) C.
A. 
B. 
C. 
D. 
Mathematics
Answer the following statement(s) true (T) or false (F)
When reading research journal articles, it is beneficial for teachers to examine the tasks used in the research as well as the results of the research.
Mathematics