Question

Cat face : f(x)= sin patrat de x - sin la a patra de x + cos patrat de x
PLSSS CARE POATE SA O REZOLVE II RAMAN DATOR

Answer 1

f(x)=$sin^{2}x- sin^{4}x+ cos^{2}x$
f(x)=$sin^{2}x+ cos^{2}x$- sin^{4} x
f(x)=1- sin^{4} x
f(x)=(1-sin^{2} x)(1+sin^{2} x)