Basic Trig

3sin x⁴ + cos x⁴ =1 find the general solution

1 Answers

sinx=t

u get by writing cos²x=1-t² and simplifying the equation so formed

at end u have

t²(2t²-1)=0

so t=0 or t=Â±1/âˆš2

now can write the general solution

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