Establish the identity.
= cot ? - tan ?
What will be an ideal response?
= 
= 
- 
= 
- 
= cot ? - tan ?
Mathematics
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Sketch several solution curves.y' = y4 - y3
What will be an ideal response?
Mathematics
Solve the problem.The table lists the average composite scores on a national entrance exam for selected years. 
Evaluate f(1987).
A. 131.5 B. 131.7 C. 130.9 D. 130.5
Mathematics
Simplify the expression. Assume that all variables are positive when they appear.
A. 2
B. 17
C. 
D. 17
Mathematics
Find the x- and y-intercepts of f.f(x) = (x + 2)(x - 5)(x + 5)
A. x-intercepts: -5, 5, 2; y-intercept: 50 B. x-intercepts: -5, 5, 2; y-intercept: -50 C. x-intercepts: -2, -5, 5; y-intercept: -50 D. x-intercepts: -2, -5, 5; y-intercept: 50
Mathematics