- 354 名前：デフォルトの名無しさん mailto:sage [2009/02/13(金) 20:44:16 ]
- >>353
十進数BASIC用
100 LET X=5
110 LET E=1E-5
120 DO
130 LET X0=X
140 LET FX0=X^4-2.03790*X^3-15.4245*X^2+15.6696*X+35.4936
150 LET FDX=4*X^3+3*( -2.03790) *X^2+2*( -15.4245) *X+15.6696
160 LET X=X0-FX0/FDX
170 LET FX=X^4-2.03790*X^3-15.4245*X^2+15.6696*X+35.4936
180 PRINT X ;FX
190 LET DFX = ABS(FX-FX0)
200 LOOP WHILE DFX > E
210 END
