Solve the problem.If tan ? = x + 1 and tan ? = x - 1, show that cot(? + ?) = 
What will be an ideal response?
cot(? + ?) = 
= 
= 
= 
= 
Mathematics
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Evaluate the indicated double integral over R.
; R = {(x, y): 0 ? x ? 
, 0 ? y ? ?}
A. 
B. ?
C. 
D. 
Mathematics
Solve by the substitution method.8x + 9y = -11-2x + 7y = -25
A. (1, -2) B. (2, -2) C. (2, -3) D. (-11, -25)
Mathematics
Decide whether the figure is convex or concave.
A. Concave B. Convex
Mathematics
Write the formula using the "language" of variation. V = ?r2h, where V is the volume of a cylinder of radius r and height h.
What will be an ideal response?
Mathematics