How do I convert fractional display to decimal display ? (2024)

vpa works but double doesn't. I am getting this error. Thank you for your answer.

It's generally not a good idea to create a variable named double in your code as it prevents you from calling the double function.

I am not creating a variable named double, I am? I just try to convert symbolic function to double, just using double in front of the integral(int). This works perfectly when I use vpa instead of double. Coming back to your first answer, where should I call the double instead. Something like this ..

Looking more closely at the line of code where the error occurred I see that there are three possible causes of that error, only one of which I called out. You could also have defined a variable named int, so int(j1, t) is being interpreted as an attempt to index into the variable rather than an attempt to call the int function.

A third option is that t is your symbolic variable. When you assign something symbolic to an expression of the form "identifier(symbolicVariable)" on the left side of the equals sign, you create a symbolic function. Since vpa returns a symbolic expression, vpa will work here. But when you try to assign a number to that same expression, MATLAB tries to figure out to which element of the array whose name is specified the number should be assigned. But MATLAB can't figure out which element is element t and so throws an error.

I use this function to find the integral of 1, I think this is what you mentioned above. Is this the problem?

V, sqrt2, and two are all sym. So in the code below the line assigning to f(t) creates a symbolic function:

D is a double. In the code below assigning to g(t) attempts to store D in element t of the array g.

Compare:

Unfortunately, didn't work. I also tried to change the format on preferences -> matlab -> command window -> numeric format (Short g, compact), that also didn't work. I should also mention that I am using symbolic math toolbox, I don't know if it is related or not. But thank you for your answer.