Find the fourier series of the following function, which is assumed to be even and have period 2l: f(x) = l-i for 1 € (0,l].

step-by-step explanation:

this is not possible to solve with the info given.   you need at least an one angle somewhere.

to find the perimeter of the rectangle this is the expression:

x-9+x-9+3x-4+3x-4=138

if we simplify it:

8x-26=138

remember, 138 is what it all adds up to

the length is 11.5cm

the width is 57.5cm

the area is 661.25cm^2

the answers might not be correct use at own risk