Compute the forward difference quotient of an expression.
DifferenceQuotient[f, {x, h}]
DifferenceQuotient[f, {x, n, h}]
DifferenceQuotient[f, {x1, n1, h1}, {x2, n2, h2}, …]
dq = DifferenceQuotient[x Sin[x], {x, h}]
→ (-(x*Sin[x]) + h*Sin[h + x] + x*Sin[h + x])/hDifferenceQuotient[c, {x, h}]
→ 0DifferenceQuotient[f[x], {x, h}]
→ (-f[x] + f[h + x])/h