Decide whether or not the given equation is an identity.sin2 ? - cos2 ? = 2 cos2 ? - 1
A. Yes
B. No
Answer: B
Mathematics
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Evaluate the given expression.
A. 5
B. - 
C. -5
D. -25
Mathematics
Find the Taylor series generated by f at x = a.f(x) = e9x, a = 6
A. 
B. 
C. 
D. 
Mathematics
Find the exact value of the expression.
A. 
B. 
C. - 
D. - 
Mathematics
Solve.If a rock falls from a height of 90 meters above the ground, the height H (in meters) after x seconds can be approximated using the formula H = 90 - 4.9x2. What is the height of the rock after 4 seconds?
A. 11.6 m B. 1361.6 m C. 70.4 m D. -294.16 m
Mathematics