Use sum-to-product formulas to rewrite the expression as a product.sin 8x - sin 4x
A. 2 sin 2x
B. 2 cos 4x cos 6x
C. 2 sin 2x cos 6x
D. 2 sin 6x cos 2x
Answer: C
Mathematics
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Use implicit differentiation to find dy/dx.x = sec(9y)
A. 
cos(9y) cot(9y)
B. 
sec(9y) tan(9y)
C. 9 sec(9y) tan(9y)
D. cos(9y) cot(9y)
Mathematics
Find the indicated vector.Let u = 
, v = 
. Find 5u - 4v.
A. 
B. 
C. 
D. 
Mathematics
Classify the statement as true or false.If a number is divisible by 2, then it must also be divisible by 6.
A. True B. False
Mathematics
Subtract.8 - 3
A. 4 B. 11 C. 6 D. 5
Mathematics