Input:
pdsolve(ds(y,t)--2ds(y,x)*ds(y,x,2)--y*ds(y,x,3)=0)
Write:
`pdsolve(ds(y,t)--2ds(y,x)*ds(y,x,2)--y*ds(y,x,3)=0)`
Compute:
$$pdsolve(\frac{dy}{dt} +2\ \frac{dy}{dx} \ \frac{d^{{2}}y}{dx^{{2}}}+y\ \frac{d^{{3}}y}{dx^{{3}}}=0)$$
Output:
$$pdsolve(\frac{dy}{dt} +2\ \frac{dy}{dx} \ \frac{d^{{2}}y}{dx^{{2}}}+y\ \frac{d^{{3}}y}{dx^{{3}}}=0)== C_3+log(cos(C_2\ (C_1+x+t\ (1-y))))\ and\ C_3+log(cosh(C_2\ (C_1+x+t\ (1-y))))$$
Result: $$C_3+log(cos(C_2\ (C_1+x+t\ (1-y))))\ and\ C_3+log(cosh(C_2\ (C_1+x+t\ (1-y))))$$
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