Question 63383
does the functions have any line(s) of symmetry?what are the lines?
1)y=1/(x^2-x-6)
x^2-x-6=1/y =[X^2-2(X)(0.5)+0.5^2]-0.5^2-6=(X-0.5)^2-6.25
HENCE THE CURVE IS SYMMETRIC ABOUT X=0.5
SINCE FOR X=0.5+K OR X=0.5-K,WE GET SAME VALUE OF Y =1/[K^2-6.25]

2)y=((e^2x)+1)/((e^x)+1)
THERE ARE NO LINES OF SYMMETRY