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sin(x) cos(x) tan(x) cot(x) sec(x) csc(x) `sin^(-1)(x)` `cos^(-1)(x)` `tan^(-1)(x)`
sinh(x) cosh(x) tanh(x) coth(x) `sinh^(-1)(x)` `cosh^(-1)(x)` `tanh^(-1)(x)`
x `x^2` `sqrt(x)` `root3(x)` `e^-x` exp(x) ln(x) log(x) `log_10 (x)` |x| W(x) `((3),(x))`
x! x!! `Gamma(x)` `gamma(2,0,x)` `psi(x)` erf(x) `Phi(x)` Ei(x) li(x) si(x) `zeta(x)` `E _0.5 (x^0.5)`
f(x) = x; `sum_(x=0)^5`(x) `int`y(x) dx `int y(x) (dx)^0.5` `int_0^1` sin(x) dx `d/dx`y(x) `(d^(1) y)/dx^(1)` y' `y^((1))(x)`








Input:
dsolve(ds(y,t,2)=ds(y,x,2)-ds(y,x)-cos(x))

Write:
`dsolve(ds(y,t,2)=ds(y,x,2)-ds(y,x)-cos(x))`



Compute: $$dsolve(\frac{d^{{2}}y}{dt^{{2}}}=\frac{d^{{2}}y}{dx^{{2}}}-\frac{d}{dx} y-cos(x))$$

Output: $$ dsolve(\frac{d^{{2}}y}{dt^{{2}}}=\frac{d^{{2}}y}{dx^{{2}}}-\frac{d}{dx} y-cos(x)) == 2+oo\ c_1 $$ Result:$$2+oo\ c_1$$



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