Differentiation without symbolic toolbox. Is it possible numerically?

109 次查看（过去 30 天）
JayashP
JayashP 2016-3-23
编辑： Walter Roberson 2017-1-31
Suppose I have a function
x = 0:0.1:10;
fxy = @(x,y) x^3 +3*x*y^2 + 2*x
I want differentiate w.r.t 'x'
dfxy = @(y)diff(fxy,1)
and then I want to solve for 'y' for 'dfxy(y) = 0'
y0 = 0.1;
yy = fsolve(dfxy,y0)
is this possible without using symbolic toolbox? I get error like 'Function 'diff' is not supported for class 'function_handle'.'

请先登录，再回答此问题。

回答（2 个）

Walter Roberson
Walter Roberson 2016-3-23
Jakub Rysanek
Jakub Rysanek 2017-1-31
编辑：Walter Roberson 2017-1-31

类别

在 Help Center 和 File Exchange 中查找有关 Calculus 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by