how to write this equation

sri satya ravi

2016 6 12

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Can someone help me write this equation. I am having problems with a bracket somewhere.Not getting the answer i needed.

Thanks

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sri satya ravi 2016-6-13

Hi Stephen Cobeldick,

I could figure out the equation. I got the result I was expecting.

Cf = sqrt((2*gama.*(r_cfv.^((gama-1)/gama)-1))./((gama-1).*(beta^4.-r_cfv.^(-2/gama))));

Thanks for the help.

John BG 2016-6-14

good, you got to the result you wanted.

The adding of .^ ./ is what I meant

Now you can throw in vectors, as long as same length, and obtain numeric results, better than working with symbolic variables.

Regards

John

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Stephen23 2016-6-12

编辑：Stephen23 2016-6-12

在 MATLAB Online 中打开

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I used y and B to make it easier to read:

num = 2*y*(r^((y-1)/y)-1)
den = (y-1)*(B^4 - r^(-2/y))
out = sqrt(num/den)

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John BG 2016-6-12

I bet Satya wants it for vectors

Stephen23 2016-6-13

编辑：Stephen23 2016-6-13

Probably, but they didn't tell us which values are vectors. Probably this is a good place to start reading:

http://www.mathworks.com/help/matlab/matlab_prog/array-vs-matrix-operations.html

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