17 lines
387 B
QBasic
17 lines
387 B
QBasic
100 rem Square root program (47)
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110 rem this program uses the newton raphson
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120 rem technique to calculate the square root
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130 read a,e
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140 let x =(a+2)/3
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150 let x1= (x+a/x)*.5
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160 rem determine absolute value of x1-x
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170 let n= x1-x
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180 if n>= 0 then 200
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190 let n= 0-n
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200 if n<e then 230
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210 let x=x1
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220 goto 150
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230 print "square root of",a,"equals",x1
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240 end
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250 data 81, .01
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