hi,
how to simply s\(^{2}\)+(R/L)s + (1/LC)=0?
my work,
by quadratic
-(R/L)±√((R/L)^{2}-(4/LC)) /2 =0
-(R/2L)±√((R/L)^{2}-(4/LC)) /2 =0
-(R/2L)±(1/2)√((R/L)^{2}-(4/LC))=0
-(R/2L)±√((R/4L)^{2}-(1/LC)=0
but the answer provided is -(R/2L)±[(R/2L)^{2}-(1/LC)]^{(1/2)}
my problem is with (R/4L)^{2}
thanks
how to simply s\(^{2}\)+(R/L)s + (1/LC)=0?
my work,
by quadratic
-(R/2L)±√((R/L)^{2}-(4/LC)) /2 =0
-(R/2L)±(1/2)√((R/L)^{2}-(4/LC))=0
-(R/2L)±√((R/4L)^{2}-(1/LC)=0
but the answer provided is -(R/2L)±[(R/2L)^{2}-(1/LC)]^{(1/2)}
my problem is with (R/4L)^{2}
thanks