if the imaginary term equates to 0, show that the equation can be written as R=S/4
We have and we know that the imaginary part of equals 0. It gives an equation : from which you can get the value of . (hint : factor by to solve this equation) Once you've found you're done since
Thanks, but am still a bit confused. Do you treat the sum =0 as you would a normal fraction or do something else to it? Having a brain blip!!!
You can treat it as a normal sum of fractions : bring the two fractions to the same denominator and then solve . You can also follow the hint I've given : factoring by should give you two equations (one of which has no solutions) which can be solved for .