Perform the desired operation. Write the answer in the form a + bi.8i(8 - 5i)
A. 64i- 40
B. 64i + 40i2
C. 64i - 40i2
D. 40+ 64i
Answer: D
Mathematics
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Rewrite the expression in terms of exponentials and simplify the results.8 cosh (ln x)
A. 4(ex+ e-x)
B. 4x
C. 0
D. 4
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Solve the equation by using sum-to-product identities in the interval [0, 2?).cos(2x) - cos(4x) = 0
A. 
B. 
C. 
D. 
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Graph the function, showing all asymptotes (those that do not correspond to an axis) as dashed lines. List the x- and y-intercepts.f(x) = 
A. x-intercept: 
, no y-intercept ;
B. x-intercept: (1, 0) , no y-intercept ;
C. x-intercept: 
, no y-intercept ;
D. x-intercept: (0, 0) , y-intercept: (0, 0) ;
Mathematics
Differentiate.
f (x) = cos (x)tan (x)
Mathematics