I am new and I have one new question
i am trying these question, i must to show:
except at (a,b)
I differentiated twice for z and for x (chain rule and quotient) and put in equation to get:
I think it is ok and it does not work for a, b (as it goes to infinity) but is it enough to do this and say equation is satisfied? sorry if is obvious question! or have i done calculation wrong?
Hello flying squirrel
thank you for the reply, yes I get same for term but i need differentiate twice. then i multiply by where
and i have for dy/dx. i quotient rule this and have (i am correcting now as i notice a mistake before)
do you think this is right now (i do same for z). so 2x term (and 4(x-a)^2) is from second derivative. so finish formula is:
i think is right now but now for x=a and z=b it not fail.
what do you think?