Slope Field by Nathan Grigg

You may use: t y + - * / ^ e pi cos sin tan abs ln acos asin atan cosh sinh tanh

Example: 2*y/tan(2*t)

-1 -0.6 -0.2 0.2 0.6 1 1.4 1.8 2.2 2.6 3 y'=t^2-1 0 0.4 0.8 1.2 1.6 2 2.4 2.8 3.2 3.6 4