What is wrong with this code?

I am new to Matlab, which is probably very apparent from the above picture. I am trying to display that the left side of the equation on line 4 is equal to the function on the right after the n and x have been defined by the user. Any help would be much appreciated. Thanks!

Answer 1

[madhan ravi]

Remove the single quotes from the last line, upload the code instead of a picture.

a/rw^2 == (cos(x)+(n^2*cos(2*x)+sin(x)^4))/((n^2-sin(x)^2)^(3/2))
   %          ^-^---------^-^------^-^^^------------^-^-- see the changes 

You can simply use isequal() to compare if they are the same.

Note: You should define rw as a number like x and n.

Answer 2

[KSSV]

'a/rw^2'==

The above is completely wrong........variable shoould be simply:

a = your expression

There are lot of typos...you need to use something like below:

a = (cos(x)+(n^2*cos(2*x)+sin(x)^4))/((n^2-sin(x)^2)^(3/2))