This page tries to find solutions for any function f(x). You can use cos, sin, pow, PI, like in these equations :

• cos(x),
• pow(x,5)-3*x-1,
• pow(x,2)+sin(PI*x)-0.5,
• pow(x,4)-6*pow(x,2)+6,
• pow(x,4)-PI*pow(x,3)-6*pow(x,3)+6*PI*pow(x,2)+11*pow(x,2)-11*PI*x-6*x+6*PI,
• or pow(x,6)-26*pow(x,5)+250*pow(x,4)-1160*pow(x,3)+2749*pow(x,2)-3134*x+1320

Enter your own function, interval and press "search" button.

Note: only solutions x for sign(f(x-ε))!=sign(f(x+ε)) are given, i.e. solutions for f(x)=cos(x)*cos(x) won't be found because f(x)>=0.

For any question/suggestion :