how do i use sqrt when trying to code a math function

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Jacob 2023-2-20

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回答： Walter Roberson 2023-2-21

im trying to code:

sqrt(100^2+(.01x-(100/x))^2)

but i keep getting the invalid expression error.

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Walter Roberson 2023-2-21

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https://ww2.mathworks.cn/matlabcentral/answers/1915900-how-do-i-use-sqrt-when-trying-to-code-a-math-function#answer_1175910

在 MATLAB Online 中打开

sqrt(100^2+(.01x-(100/x))^2) 
              ^^

MATLAB has absolutely no implied multiplication. .01x is a syntax error, not 0.01 times x.

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