Prove the identity.4 cot 4x = 2 cot 2u - 2 tan 2u
What will be an ideal response?
4 cot 4x = 4
= 2
= 
Mathematics
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Find the product using one of the formulas for the square of a binomial.(y + 0.8)2
A. 2y + 1.6 B. y2 + 1.6y + 0.64 C. y2 + 0.64y + 0.64 D. y2 + 0.64
Mathematics
Solve the inequality and write the solution set in interval notation.- 0.4z > - 0.24
A. (- 0.6, ?) B. (-?, - 0.6) C. (-?, 0.6) D. (0.6, ?)
Mathematics
Solve the system using Gaussian elimination. 7x - y - 6z = 26-5x + 9y - 4z = -2 3x - 7y + z = -5
A. {(5, 1, 3)} B. {(5, 3, 1)} C. {(-5, 3, 10)} D. ?
Mathematics
Factor completely, or state that the polynomial is prime.7x3 + 7
A. 7(x - 1)(x2 + x + 1) B. 7(x + 1)(x2 + x + 1) C. 7(x + 1)(x2 - x + 1) D. prime
Mathematics