**TI92P*mainlr.Invert Expression, Eqn, or Inequality Rinv7Zyy-e-Ryy-e[1]-Rl:RRl:-;yyyyyytemptempR-=-:yy yyxxtempxtemptempyytempytemptemptempxyytempyxxtemptempxxyytemp- xxtemp->--<--=-;temp}inv(e1,v1,v2)e2 Returns the inverse expression. Does not test if the expression returned is a valid function. e1: Expression (i.e. x or y=x) v1: Old dependant var v2: New dependant var e2: Inverse expr or func Ex: inv(x^3,y,x) Ex: inv(z -xxyy@