Two numbers of columns for the general problem - Printable Version +- HP Forums (https://www.hpmuseum.org/forum) +-- Forum: HP Calculators (and very old HP Computers) (/forum-3.html) +--- Forum: HP Prime (/forum-5.html) +--- Thread: Two numbers of columns for the general problem (/thread-12052.html) Two numbers of columns for the general problem - yangyongkang - 01-01-2019 02:24 PM first question： Code: `rsolve(a(n+1)=a(n)^2,a(n),a(1)=1)` XCAS output results： Quote:"Unable to isolate rsolve_x0 in seqsolve([rsolve_x0^2,[rsolve_x0,n],[rsolve_x0]])" second question： Code: `rsolve(a(n+1)=(2*n^2*a(n)+4n*a(n)+2*a(n)+1)/(2n^2+4n-a(n)+2),a(n),a(1)=1/2)` Terminal output： Quote:Cst part must be hypergeometric Unable to solve recurrence The second number of questions can be tried by mathematical methods. Thank you for browsing, Happy New Year. RE: Two numbers of columns for the general problem - ijabbott - 01-01-2019 07:08 PM Section 19.2 (page 304) of Symbolic computation and Mathematics with the calculator HP Prime (hp-prime_cas.pdf) goes into more detail about what forms of sequences are supported by rsolve. This information has been omitted from the official HP Prime User Guide for some reason.