HINT: Assign the series RC leg the reference Z1 and assign the C2 leg the reference Z2. Then write the expression for Z1||Z2. With the expression Z1||Z2 figured out, you can then plug in the impedances for each of the elements and solve. hgmjr
That's right, so ... Z1 = R1 +1/sC1 Z2 = 1/sC2 Z = (R1/sC2 + 1/s^2C1C2) / (R1 +1/sC1+1/sC2) Hope that's right. Thanks.
You have the the equation correct. You probably need to simplify the expression to be totally complete. hgmjr