How can I correctly use the parenthesis and write equations

I would like to calculate P_d by the equation above and I wrote that equation in Matlab. I wrote two equations in matlab, but none of them give the correct answer. I beg your corrections on the equations written in Matlab.

Best regards!

[Adam Danz]

Supplying the text rather than an image would allow us to copy-paste your code so we can examine it from the editor.

Providing a set of inputs and expected outputs would is also a good idea.

Answer 1

[dpb]

Pd=Pc*((1+(k-1)/2*ac^2*Vpr^2)^(k/(K-1))-1);

Which inputs might be vectors, if any, would determine where and if need dot operators.

Work from inside out...