Determine where the given function is concave up and where it is concave down. f(x) = x
A. Concave down on (-3, 0), concave up on (0, 3)
B. Concave up on (-?, 0), concave down on (0, ?)
C. Concave up on (-?, ?)
D. Concave up on (-3, 0), concave down on (0, 3)
Answer: D
Mathematics
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Use differentiation to determine whether the integral formula is correct.
dx = 
+ C
A. Yes B. No
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Evaluate the integral.
A. 
ln
+ 
ln
+ 
tan-1(et) + C
B. 
ln
- 
ln
+ 
tan-1(et) + C
C. 
ln
- 
ln
+ C
D. 
ln
- 
ln
+ 
tan-1 t + C
Mathematics
Graph the function.y = sin 
A. 
B. 
C. 
D. 
Mathematics
The graph of a logarithmic function is shown. Select the function which matches the graph.
A. y = -log x B. y = -log(-x) C. y = log(-x) D. y = log x
Mathematics