How to evaluate an equation with multiple points for a variable.

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aquiano 2016-9-5

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评论： Thorsten 2016-9-8

I have RE = V*D/NU and another equation C = 3.*RHOBAR/(4.*D) both variables RE and C appear in other equations, which will eventually end up in a plot. I want set multiple values for D. How do I solve this?

If I use D=[.1 .05 .001] I get an error stating Matrix Dimensions must agree

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KSSV 2016-9-7

What are V, D, RHOBAR? constants? I think NU is poisons ratio and RHOBAR is density. What is V?

Thorsten 2016-9-8

Please post your code in text form, not as an image, such that we can run it.

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Answer 1

Thanigaivel Raja T 2016-9-8

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编辑：Thanigaivel Raja T 2016-9-8

在 MATLAB Online 中打开

Make sure you have placed dot before operators for vector variables in your reynolds number RE, C and in equation containing RE and C.

In general,

*  % matrix multiply
.* %scalar multiply
/  % matrix divide
./ % scalar divide
^  % exponentiation
.^ % element-by-element exponentiation

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How to evaluate an equation with multiple points for a variable.

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