,DERIVATIVE ( ;Y ) ,RESPECT 6;X ,EXAMPLES #1_4 ,! DERIVATIVE ( ;Y ) RESPECT 6;X : IS REPRES5T$ 0OP5 FRAC;N DY OV] DX CLOSE FRAC;N IS WRITT5 ?DY/DX# #2_4 ,OP5 FRAC;N DY OV] DX CLOSE FRAC;N EQUALS TWO ;X PLUS F\R IS WRITT5 ?DY/DX# .K #2X+4 #3_4 ,! SECOND DERIVATIVE ( ;Y ) RESPECT 6;X : IS REPRES5T$ 0OP5 FRAC;N ;D SQU>$ ;Y OV] DX SQU>$ CLOSE FRAC;N IS WRITT5 ?D^2"Y/DX^2"# #4_4 ,! N? DERIVATIVE ( ;Y ) RESPECT 6;X : IS REPRES5T$ 0OP5 FRAC;N ;D 6! N? P[] ;Y OV] DX 6! N? P[] CLOSE FRAC;N IS WRITT5 ?D^N"Y/DX^N"# #A