Input:
pdsolve(ds(y,t,2)=2^2*ds(y,x,2))
Write:
`pdsolve(ds(y,t,2)=2^2*ds(y,x,2))`
Compute:
$$pdsolve(\frac{d^{{2}}y}{dt^{{2}}}={2}^{2}\ \frac{d^{{2}}y}{dx^{{2}}})$$
Output:
$$pdsolve(\frac{d^{{2}}y}{dt^{{2}}}={2}^{2}\ \frac{d^{{2}}y}{dx^{{2}}})== 2\ C_1+C_2\ exp(2.0\ t+x)+C_2\ t+C_2\ x+C_3\ t\ x+C_1\ (\frac{1}{2}\ {t}^{2}+\frac{1}{8}\ {x}^{2})$$
Result: $$2\ C_1+C_2\ exp(2.0\ t+x)+C_2\ t+C_2\ x+C_3\ t\ x+C_1\ (\frac{1}{2}\ {t}^{2}+\frac{1}{8}\ {x}^{2})$$
zoom graph by mouse wheel.