Verify the identity.cos 
= -sin x
What will be an ideal response?
cos 
= cos 
cos x + sin 
sin x = 0 ? cos x - 1 ? sin x = - sin x
Mathematics
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Use implicit differentiation to find dy/dx and d2y/dx2.4
- y = 2x
A. 
= 
; 
= 
B. 
= 
; 
= 
C. 
= 
- 2; 
= - 
D. 
= 
; 
= 
Mathematics
Solve the problem.The perimeter of a rectangle is 44 cm. The length is 12 cm longer than the width. What are the length and width of the rectangle?
A. Length: 22 cm; width: 10 cm B. Length: 17 cm; width: 5 cm C. Length: 23 cm; width: 11 cm D. Length: 12 cm; width: 5 cm
Mathematics
Convert to scientific notation.0.00000072209
A. 7.2209 × 107 B. 7.2209 × 10-7 C. 7.2209 × 10-6 D. 7.2209 × 106
Mathematics
Graph the rational function.f(x) = - 
A. 
B. 
C. 
D. 
Mathematics