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3rd degree equation

$a\cdot x^3+b\cdot x^2+c\cdot x+d\;=\;0$

$a$= $b$= $c$= $d$=

$x$ = or $x$ = or $x$ =

Reference

Math.abs(x)$|x|$
Math.cos(x)cos(x), x en rad
Math.sin(x)sin(x), x en rad
Math.tan(xtan(x), x en rad
Math.exp(x)$e^x$
Math.log(x)$ln(x)$
Math.log(x)/Math.log(10)$log_{10}(x)$
Math.pow(x,y)$x^y$
Math.sqrt(x)$\sqrt x$
Math.PI$\pi$
Math.E $e$