200 CLS:CLEAR:PRINT"DIFFDIFF FUN:":PRINT"DIFFERENTIATING A DIFFERENTIAL FUNCTION":PRINT"eg. ON LINE 230 F=X(1)^3-T^3":PRINT"FOR A 1st ORDER FUNCTION WHERE X(1)=dX/dT, X(2)=SECOND ORDER..."
201 DEFDBL B-H,O-Z
202 INPUT "MAX GIVEN FUNCTION ORDER=";N:INPUT "REQUIRED DIFFERENTIAL=";N0:N=N+N0
205 DIM X(N),Y(N):PRINT"INPUT LOWER DIFFERENTIAL VALUES:":FOR J=0 TO N:PRINT"X(";J;")=";:INPUT Y(J):NEXT J:INPUT "T=";T1:GOSUB 247
215 INPUT "INCREMENT Z (.00001?)=";Z:FOR J=0 TO 2^N0-1:J1=J:FOR K=1 TO N0
220 IF J/2-INT(J/2)>0 THEN M=M+1:A=-1:GOSUB 250:GOTO 227