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multiple if elseif statement

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Jibeom Hong
Jibeom Hong 2022-12-1
回答： Rohit 2022-12-20
How can solve this (using if and esleif statement)?
if lambda_theta <= 0
F_lambda_theta2 = 1 - ( (-12.986 * lambda_theta) -(123.66 * lambda_theta.^(2)) - (405.689 * lambda_theta.^(3)) ) * exp( -(Tu/1.5)^1.5 ) % lambda_theta2=<0
else
F_lambda_theta2 = 1 + 0.275 * ( 1 - exp( -35.0 * lambda_theta ) ) * exp ( -Tu/0.5 ) % lambda_theta2 > 0
end
% Re_theta2
if Tu <= 1.3
Re_theta2 = ( 1173.51 - 589.428 * Tu + ( 0.2196/(Tu^2) ) ) .* F_lambda_theta2
else
Re_theta2 = 331.50 * ( Tu - 0.5658 ) ^ (-0.671) * F_lambda_theta2
end

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回答（1 个）

Rohit
Rohit 2022-12-20
You can refer to the below documentation links of ‘if else statements’ to get you started with implementation. This also has some examples.
https://www.mathworks.com/help/matlab/ref/if.html
In order to get a better understanding of Element operations and array vs matrix operation and get clarity on the difference between them, you can refer to the below documentation links. Based on your use case, you can use either ‘*’ or ‘.*’ .
https://www.mathworks.com/help/matlab/ref/times.html?searchHighlight=Element-by-element%20operations
https://www.mathworks.com/help/matlab/matlab_prog/array-vs-matrix-operations.html

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