41KiB, 804x465, a1tAv.jpg View SameGoogleiqdbSauceNAO Anonymous Tue 16 Feb 03:48:52 2021 No.12711018 ViewReplyOriginalReport Quoted By: >>12711031 >>12711079 >>12711090 >>12711095 >>12711099 >>12711129 >>12711167 >>12712084 A $20 steam card to the first person who can find a general solution to this differential using complex analysis. f''(x) = f(f(x)