DSolve
DSolve[eqn] solves a differential equation eqn.
DSolve[eqn,u,x] solves a differential equation for the function u, with independent variable x.
DSolve[eqn,u,{x,xmin,xmax}] solves a differential equation for x between xmin and xmax.
DSolve[{eqn1,eqn2,…},{u1,u2,…},…] solves a list of differential equations.
DSolve[eqn,u,{x1,x2,…}] solves a partial differential equation.
DSolve[eqn,u,{x1,x2,…}∈Ω] solves the partial differential equation eqn over the region Ω.
Please visit the official Wolfram Language Reference for more details and examples on core symbols.