用Octave计算导数基本公式(12)
广告
{{v.name}}
反三角函数求导公式(2)
\( ({\rm arccos} x )'= -\frac{1}{ \sqrt{1-x^2} } \)
程序代码如下
function [text_result, numeric_result] = func29()
pkg load symbolic;
x = sym('x');
question = acos(x);
lim = diff(question, x);
text_result = ["\n", disp(lim)];
numeric_result = eval(lim);
endfunction
计算结果如下
>> [text_result, numeric_result] = func29()
text_result =
-1
───────────
________
╱ 2
╲╱ 1 - x
numeric_result = (sym)
-1
───────────
________
╱ 2
╲╱ 1 - x