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differential equation problem with Weierstrass elliptic function
Hi, I am trying to solve the following differential equation: DSolve[y''[x] == -y[x]^2 Cos[x], y[x], x] Mathematica 6.0 for Linux x86 (64-bit) gives me a solution involving the WeierstrassP function. It is easy to check that the given solution is wrong (just substitute back into the differential equation and plot for some random coefficients C and C). (1) Can you help me solve this equation? (2) Is this a bug in Mathematica? Thanks! Roman.