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Input:
fsolve(f(x+1)-f(x)=x)
Write:
`fsolve(f(x+1)-f(x)=x)`
Compute:
$$fsolve(f(x+1) - f(x)=x)$$
Output:
$$fsolve(f(x+1) - f(x)=x)== C_1+\frac{1}{2}\ ((-x)+{x}^{2})$$
Result: $$C_1+\frac{1}{2}\ ((-x)+{x}^{2})$$
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