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Solve the following a) 2 cos^2(4x) + 5 cos(4x) + 2 = 0. b) arctan(3x +...

Solve the following

a) 2 cos^2(4x) + 5 cos(4x) + 2 = 0.

b) arctan(3x + 3) = π/4

c) 2^1+sin^2(x) = 4^sin(x)

d) ln(x + 3) = ln(x) + ln(3)

Math   Precalculus   
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