Input:
pdsolve(ds(y,t)-ints(y,x)-y-exp(x))
Write:
`pdsolve(ds(y,t)-ints(y,x)-y-exp(x))`
Compute:
$$pdsolve(\frac{dy}{dt} -exp(x)-\int y\ dx-y)$$
Output:
$$pdsolve(\frac{dy}{dt} -exp(x)-\int y\ dx-y)== (\frac{-1}{2})\ exp(x)+C_1\ exp(\frac{1}{2}\ t-2.0\ x)$$
Result: $$(\frac{-1}{2})\ exp(x)+C_1\ exp(\frac{1}{2}\ t-2.0\ x)$$
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