Roots of a function: Difference between revisions
Added Easylang
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x += fstep;
end;</syntaxhighlight>
=={{header|EasyLang}}==
<syntaxhighlight>
func f x .
return x * x * x - 3 * x * x + 2 * x
.
numfmt 6 0
proc findroot start stop step . .
x = start
while x <= stop
val = f x
if val = 0
print x & " (exact)"
elif sign val <> sign0 and sign0 <> 0
print x & " (err = " & step & ")"
.
sign0 = sign val
x += step
.
.
proc drawfunc start stop . .
linewidth 0.3
drawgrid
x = start
while x <= stop
line x * 10 + 50 f x * 10 + 50
x += 0.1
.
.
drawfunc -1 3
findroot -1 3 pow 2 -20
print ""
findroot -1 3 1e-6
</syntaxhighlight>
=={{header|EchoLisp}}==
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