Function intersection

#1 Posted: 2017/2/18 04:03:25

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Hi there,

is it possible to get exact point of functions intersection in Smath somehow? I have simply linear and constant function.

BR,
Marcin

#2 Posted: 2017/2/18 06:00:22

sergio

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There are more opportunities: without the use of plugins, for example, you can use the function or the method of inversion of the matrix.

sergio
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mdominiak 2017/2/18 06:44:00

#3 Posted: 2017/2/18 06:45:09

mdominiak

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Wrote
There are more opportunities: without the use of plugins, for example, you can use the function or the method of inversion of the matrix.

sergio
[albumimg]1451[/albumimg]

Thanks!

What with quadratic or higher function?

BR

#4 Posted: 2017/2/18 07:18:48

sergio

116 likes in 332 posts.

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The method 2, of course, no; the method 1 yes, but get only one solution.
You can also use the internal function, "solve", or the plugins.
Search on the forum the plugins "nonlinearsolvers" and "maxima". Allow to extend the solution of nonlinear equations (reading the discussions can also highlight some limitations highlighted by users).

sergio

#5 Posted: 2017/2/18 12:48:24

Jean Giraud

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Read the first example carefully. 'solve' is inaccurate on long range
but the initial is good enough to reduce the brackets. Wise to check
with accurate 'Dichotomy'.

Jean

Forum Solve.sm (15.71 KiB) downloaded 805 time(s).

#6 Posted: 2017/2/18 19:51:12

Jean Giraud

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"roots" is a great solving companion:
solve explicit & solve general intersection.

Jean

Solve roots.sm (12.08 KiB) downloaded 788 time(s).

#7 Posted: 2017/2/20 03:42:21

mdominiak

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Thanks for help.

SMath

Function intersection

Function intersection - Messages

SMath Forum

Function intersection - Messages