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Input:
dsolve(y'-tan(y)-1/(1--x^2)--x)
Write:
`dsolve(y'-tan(y)-1/(1--x^2)--x)`
Compute:
$$dsolve((-tan(y))+x-(\frac{1}{1+{x}^{2}})+y^{(1)}(x))$$
Output:
$$dsolve((-tan(y))+x-(\frac{1}{1+{x}^{2}})+y^{(1)}(x))== atan(x)$$
Result: $$atan(x)$$
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