Establish the identity.
= csc ? cot ?
What will be an ideal response?
= 
= 
= 
? 
= 
= csc ? cot ?
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Compare the right-hand and left-hand derivatives to determine whether or not the function is differentiable at the point whose coordinates are given.
y = 
y = -1
A. Since limx?-1+ f '(x) = 0 while limx?-1- f '(x) = 1, f(x) is not differentiable at 
B. Since limx?-1+ f '(x) = -1 while limx?-1- f '(x) = 0, f(x) is not differentiable at 
C. Since limx?-1+ f '(x) = 0 while limx?-1- f '(x) = -1, f(x) is not differentiable at 
D. Since limx?-1+ f '(x) = 0 while limx?-1- f '(x) = 0, f(x) is differentiable at 
Solve the problem.Six times some number added to 7 is equivalent to 25 added to the product of 3 and the number.
A. 6 B. 18 C. -18 D. -6
Use a product-to-sum identity to rewrite the expression.sin(12t2) cos (2t2)
A. 0.5(cos(10t2) - cos(14t2)) B. 0.5(cos(14t2) + cos(10t2)) C. 0.5(sin(14t2) - sin(10t2)) D. 0.5(sin(14t2) + sin(10t2))
Express the graph shown using interval notation. Also express it as an inequality involving x.
A. (-1, 4] -1 < x ? 4 B. (-1, 4) -1 < x < 4 C. [-1, 4] -1 ? x ? 4 D. [-1, 4) -1 ? x < 4