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# odeplot = Ordinary Differential Equation (ODE) plot 常微分方程制图

Input Ordinary Differential Equation y'=f(x,y) or y''=f(x,y,y') or the right hand side of ODE:

x=, y =
y = 0, x =

It solves Ordinary Differential Equation (ODE) numerically with or symbolically with

This ODE calculator can be used to visualize individual functions, First and Second order Ordinary Differential Equation over the indicated domain.

Below graph a second input area can be used to calculate individual numerical expressions in Math. Complex calculation must be converted to complex operator by tocomplex() before calculation and plot. The independent variable must be typed as x for evaluation. Type an expression in the area below and press enter to evaluate.

For example :

1. y= pow(x,2)
2. y'=cos(x)
3. y''=y'-y-sin(x)
4. for animation, add the timer(t) function and change animation speed by the different t value, input sin(x-timer(9))
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