Thread: notation.

if i have:

for even n,
An= 4[(-1)^(n/2)-1]/(π^2n^2)

and for odd n,
An= 2[πn(-1)^((n-1)/2)-2]/(π^2n^2)

can i use proper notation to write this all in one line?

Originally Posted by linalg123

if i have:

for even n,
An= 4[(-1)^(n/2)-1]/(π^2n^2)

and for odd n,
An= 2[πn(-1)^((n-1)/2)-2]/(π^2n^2)

can i use proper notation to write this all in one line?

Dear linalg123,

This is a piecewise function. So you could write,

If is equal to A for n odd and B for n even you can also write it as



Do you see why?