List the quadrants in which the function has the given sign.sine is negative
A. III, IV
B. I, III
C. II, IV
D. II, III
Answer: A
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Compute the gradient of the function at the given point.
A. - 
i + 
j
B. 
i + 
j
C. 
i + 
j
D. 
i + 
j
Use the graph of the function f(x) to locate the local extrema and identify the intervals where the function is concave up and concave down.
A. Local minimum at x = 0; local maximum at x = 2; concave up on (0, ?); concave down on (-?, 0) B. Local minimum at x = 2; local maximum at x = 0; concave down on (0, ?); concave up on (-?, 0) C. Local minimum at x = 0; local maximum at x = 2; concave down on (0, ?); concave up on (-?, 0) D. Local minimum at x = 2; local maximum at x = 0; concave up on (0, ?); concave down on (-?, 0)
Find the sum of the arithmetic series using a formula.1 + 2 + 3 + ... + 421
A. S421 = 88,831 B. S421 = 88,410 C. S421 = 177,241 D. S421 = 177,662
Solve the equation and check your solution. If there is no solution, say so.
- 
= 
A. x = 3
B. x = 
C. x = 
D. No solution