cos(4x)=-1/2 - solution

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Solution for cos(4x)=-1/2 equation:

x^5+x^4+x^3+x^2-2;x^4-1

(-3*x)/(2*(1-x)^(1/2))

(x+3)/3-((x+2)/4) = (3-(2*x))/12;x

x

27.09;0.42

(5-x)/2-(2*(2*x+5)) = 2*x-1;x

x

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