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  • Similar expressions

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((2/cos(x))-1)^2+2*((2*sin(x))/(cos(x))^2)^2-4/(cos(x))^4=0 equation

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Numerical solution:

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The solution

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            2               2              
/  2       \      /2*sin(x)\       4       
|------ - 1|  + 2*|--------|  - ------- = 0
\cos(x)    /      |   2    |       4       
                  \cos (x) /    cos (x)
$$\left(2 \left(\frac{2 \sin{\left(x \right)}}{\cos^{2}{\left(x \right)}}\right)^{2} + \left(-1 + \frac{2}{\cos{\left(x \right)}}\right)^{2}\right) - \frac{4}{\cos^{4}{\left(x \right)}} = 0$$
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