Write the complex number in polar form. Express the argument ? in degrees, with 0 ? ? ? 360°.-4
A. 4(cos 0° + i sin 0°)
B. 4(cos 90° + i sin 90°)
C. 4(cos 270° + i sin 270°)
D. 4(cos 180° + i sin 180°)
Answer: D
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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 = 3 ; local maximum at x = -3 ; concave up on (0, ?); concave down on (-?, 0) B. Local minimum at x = 3 ; local maximum at x = -3 ; concave down on (-?, -3) and (3, ?); concave up on (-3, 3) C. Local minimum at x = 3 ; local maximum at x = -3 ; concave down on (0, ?); concave up on (-?, 0) D. Local minimum at x = 3 ; local maximum at x = -3 ; concave up on (-?, -3) and (3, ?); concave down on (-3, 3)
Provide an appropriate response.Determine whether the sequence is arithmetic, geometric, or neither. If the sentence is geometric, find the common ratio r. If the sequence is arithmetic, find the common difference d.
, 
, 
, 
, 
, . . .
A. neither
B. geometric, r = 
C. geometric, r = 2
D. arithmetic, d = 
Begin by graphing the standard quadratic function f(x) = x2 . Then use transformations of this graph to graph the given function.h(x) = (
x - 2)2
A. 
B. 
C. 
D. 
Solve the problem.Larry has $2300 to invest and needs $2800 in 12 years. What annual rate of return will he need to get in order to accomplish his goal, if interest is compounded continuously? (Round your answer to two decimals.)
A. 1.64% B. 2.49% C. 1.49% D. 3.49%