why is my plot not working

I have copied the format of plot code directly, but it doesnt like my equation. I have tried everything I know please help, im dying.

Answer 1

[David Hill]

t=1:10;
F=1./(4.^t)-1./(5.^t);
plot(t,F);

[Daniel Pollard]

To OP @Colby Jennings:

This works because of the . used before each operation. In your code, you tried

1/4^x

which the matlab code interprets as you trying to raise a number (4) to the power of a vector, x. That doesn't really work in normal mathematics, and MATLAB would have thrown an error.

David's code instead writes

1/4.^x

which MATLAB reads to mean "for each element xi in x, calculate 1/4^xi". This is what you intended and is the usual way of calculating values for plotting.

[Colby Jennings]

oh okay. thankyou