solve function accuracy

solve function accuracy - quadratic solver generates root as large fraction with error - Сообщения

#1 Опубликовано: 02.04.2017 10:24:15

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See the following

quadratic solver.sm (6 КиБ) скачан 63 раз(а).

Note how second root from solve function generated a fraction containing
large numbers with minor error. This compares with actual which is a
simplistic decimal.

Is there a work-around to obtain the correct decimal result?

#2 Опубликовано: 02.04.2017 10:46:32

Jean Giraud

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Your fractional didn't survive as soon as I asked
for 15 decimals in your 'r1'.

quadratic solver.sm (8 КиБ) скачан 73 раз(а).

#3 Опубликовано: 03.04.2017 13:25:13

Davide Carpi

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Simply change the optimization of [MATH]solve(f(x),x)[/MATH] from symbolic to numeric.

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solve function accuracy - quadratic solver generates root as large fraction with error - Сообщения