Input:
pdsolve(ds(y,t)-ds(y,x,2)-ds(y,x)-exp(t)- exp(x))
Write:
`pdsolve(ds(y,t)-ds(y,x,2)-ds(y,x)-exp(t)- exp(x))`
Compute:
$$pdsolve(\frac{dy}{dt} - \frac{d^{{2}}y}{dx^{{2}}} - \frac{dy}{dx} - exp(t) - exp(x))$$
Output:
$$pdsolve(\frac{dy}{dt} - \frac{d^{{2}}y}{dx^{{2}}} - \frac{dy}{dx} - exp(t) - exp(x))== pdsolve(-exp(t)-exp(x)+y^{(1)}(t)-y^{(1)}(x)-y^{(2)}(x),y)$$
Result: $$pdsolve(-exp(t)-exp(x)+y^{(1)}(t)-y^{(1)}(x)-y^{(2)}(x),y)$$