I have this assignment: Please upload the solution of the following recursive formula : T$($n$)=$ n $*$ T$($n$-1)\backslash$pm $1,$ T$(0)=0.$

Solve it step by step$$ Knowing that it is for the subject $-$ Discrete Mathematicssolve. $T(n)=nT(n-1)+-1,T(0)=0.$