Solve for the angle ?, where 0 ? ? ? 2?cos2? = 

A. ? = 
B. ? = 0, ?, 2?
C. ? = 
D. ? = 


Answer: A

Mathematics

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Use the Concavity Theorem to determine where the given function is concave up and where it is concave down. Also find all inflection points.T(t) = 2t - t3

A. Concave up on (-?, 0) ? (1, ?), concave down on (0, 1); inflection points (0, 0), (1, 2) B. Concave up on (-?, 0), concave down on (0, ?); inflection point (0, 0) C. Concave up on (0, ?), concave down on (-?, 0); inflection point (0, 0) D. Concave down for all t, no points of inflection

Mathematics

List the elements in the set.The set of the days of the week

A. {Tuesday, Thursday} B. {Sunday, Monday, Tuesday, Wednesday, Thursday, Friday, Sunday} C. {Friday, Monday, Saturday, Sunday, Thursday, Tuesday, Wednesday} D. {Saturday, Sunday}

Mathematics

Evaluate h (7), where 

?
?

A. 2,450
B. 3,844
C. 3,834
D. 3,136
E. 2,456

Mathematics

Use mathematical induction to prove the statement is true for all positive integers n.The integer n3 + 2n is divisible by 3 for every positive integer n.

What will be an ideal response?

Mathematics