!set exolist  =!char 1 to -2 of addition,derivsum,addmixed,combin,deriv,sumwderiv,polynomial,squaresum,int,multmixed,derivprod,mult,sumsquare,square,multderiv,reciproc,compo,division,linfrac,compinv1,compinv2,inv,
!set titlelist=!char 1 to -2 of 1. ӷ f+g,1. ͵ĵ (f+g)',1. ϼӷ,1.  af+bg,1.  f',1. 뵼 f+f',2. fĶʽ,2. ͵ƽ (f+g)^2,2. ,2. ϳ˷,2. ˻ĵ (f*g)',2. ˷ f*g,2. ƽ f^2+g^2,2. ƽ f^2,2. 뵼 f*f',3.  1/f,3. Ϻ f(g(x)),3.  f/g,4. һηʽ,4. Ϻ I,4. Ϻ II,4. 溯 f^(-1),
!set exototal =!itemcnt $exolist

