f(x)=根号(x^2+1) x=1,2,3 相关知识点: 试题来源: 解析 clearclcsyms xf = sqrt(x^2+1)diff_f = diff(f)y1 = subs(diff_f,x,1)y2 = subs(diff_f,x,2)y3 = subs(diff_f,x,3)结果y1 = 0.7071y2 = 0.8944y3 = 0.9487
解答一 举报 clear;clc;syms xf = sqrt(x^2+1);diff_f = diff(f);y1 = subs(diff_f,x,1)y2 = subs(diff_f,x,2)y3 = subs(diff_f,x,3)结果:y1 =0.7071y2 =0.8944y3 =0.9487 解析看不懂?免费查看同类题视频解析查看解答 相似问题 在matlab中求函数 的三阶导数 MATLAB求函数导数.. 运用...
解答一 举报 clear;clc;syms xf = sqrt(x^2+1);diff_f = diff(f);y1 = subs(diff_f,x,1)y2 = subs(diff_f,x,2)y3 = subs(diff_f,x,3)结果:y1 =0.7071y2 =0.8944y3 =0.9487 解析看不懂?免费查看同类题视频解析查看解答 相似问题 在matlab中求函数 的三阶导数 MATLAB求函数导数.. 运用...
>> f=inline('sqrt(x.^2+1)'); %定义函数f(x) >> x1=1;x2=2;x3=3; >> h=0.01; %步长 >> y1=diff(f([x1,x1+h]))/h %求f’(1) y1 = 0.7089 >> y2=diff(f([x2,x2+h]))/h %求f’(2) y2 = 0.8949 >> y3=diff(f([x3,x3+h]))/h %求f’(3)...
解:>> syms x >> f=x^3+cos(x)+log(2) f = cos(x) + x^3 + 62433/90992 >> diff(f) ans = 3*x^2 - sin(x) >> x=pi/2 x = 1.5708 >> x=pi x = 3.1416 (2)>>...
用matlab求函数在指定点的数值导数f(x)=根号(x^2+1) x=1,2,3 答案 clear;clc;syms xf = sqrt(x^2+1);diff_f = diff(f);y1 = subs(diff_f,x,1)y2 = subs(diff_f,x,2)y3 = subs(diff_f,x,3)结果:y1 =0.7071y2 =0.8944y3 =0.9487相关推荐 1用matlab求函数在指定点的数值导数...
用matlab求函数在指定点的数值导数代码如下:clear;clc;syms x f = sqrt(x^2+1);diff_f = diff(f);y1 = subs(diff_f,x,1)y2 = subs(diff_f,x,2)y3 = subs(diff_f,x,3)结果:y1 =0.7071 y2 =0.8944 y3 =0.9487