Input: dsolve(ds(y,x,-1)-2y=exp(x))
Write: `dsolve(ds(y,x,-1)-2y=exp(x))`
Output: $$ dsolve(\int y\ (dx)^{1.0}-2\ y=exp(x)) == C_1\ exp(\frac{1}{2}\ x)-exp(x) $$ Result:$$C_1\ exp(\frac{1}{2}\ x)-exp(x)$$