Determine whether the Fourier series of the given function will include only sine terms, only cosine terms, or both sine terms and cosine terms.f(x) = 1 - 6x -7 ? x < 7
A. both sine and cosine terms
B. only cosine terms
C. only sine terms
Answer: C
Mathematics
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Write down the meaning of the given equation.y = cot-1 8x
A. y is the angle whose cotangent is x. B. y is the angle whose tangent is 8x. C. x is the angle whose cotangent is 8y. D. y is the angle whose cotangent is 8x.
Mathematics
Use sum-to-product identities to rewrite the expression as a product.sin 51° - sin 21°
A. 2 sin 36° cos 15° B. -2 sin 36° sin 15° C. 2 cos 36° sin 15° D. 2 cos 36° cos 15°
Mathematics
Graph the function.y = - 
cos 
x
A. 
B. 
C. 
D. 
Mathematics
Add the numbers.
A. 4545 B. 4356 C. 4456 D. 4347
Mathematics