how to write sqrtroot power 7 ?

Question

Grégoire 2024-2-22

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2085318-how-to-write-sqrtroot-power-7

评论： DGM 2024-2-22

采纳的回答： Dyuman Joshi

Hi,

i m trying to write this function in MatLab g(x) = sqrt^7(14x-7) but i don t know how to write the power of a root.

I would love to learn how to do it,

thanks

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Answer 1

Dyuman Joshi 2024-2-22

2
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2085318-how-to-write-sqrtroot-power-7#answer_1414353

编辑：Dyuman Joshi 2024-2-22

在 MATLAB Online 中打开

Use power, .^ and define a Function Handle -

g = @(x) sqrt(14.*x - 7).^7
g = function_handle with value:
    @(x)sqrt(14.*x-7).^7
g(2)
ans = 4.2439e+04
g(1/2)
ans = 0
g([1/2 2])
ans = 1×2
1.0e+04 *

         0    4.2439

I suggest you take the free MATLAB Onramp tutorial to learn the syntax and basics of MATLAB.

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Grégoire 2024-2-22

thanks !

DGM 2024-2-22

You sure you're looking for

(14*x - 7)^(7/2)

instead of

(14*x - 7)^(1/7)

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Answer 2

Hassaan 2024-2-22

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2085318-how-to-write-sqrtroot-power-7#answer_1414348

编辑：Hassaan 2024-2-22

在 MATLAB Online 中打开

x = 2; % Example value for x
resultFromRootFunction = nthroot(14*x - 7, 7);
resultFromPowerFunction = (14*x - 7)^(1/7);
disp(['Using nthroot: ' num2str(resultFromRootFunction)]);
Using nthroot: 1.5449
disp(['Using power operator: ' num2str(resultFromPowerFunction)]);
Using power operator: 1.5449

MATLAB Basic Training:

To learn about MATLAB basic

MATLAB Onramp | Self-Paced Online Courses - MATLAB & Simulink (mathworks.com)

References:

Real nth root of real numbers - MATLAB nthroot (mathworks.com)

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