function in R F(x)=1/2x^2
find set points That can create 2 tangent to the curve C(f) orthogonal

Question

function in R F(x)=1/2x^2 
find set points That can create 2 tangent to the curve C(f) orthogonal

anonymous · Answer

first u need to kow what is orthoganal, do u have any idea?

anonymous · Answer

y1=a1x+b1
y2=a2x+b2

if orthogonal a1*a2=-1

anonymous · Answer

okay from that i understand that a1 and a2 are our gradients right? so if a1*a2=-1 the two tagent are perpendicular to each other

anonymous · Answer

ok but how ??

anonymous · Answer

sorry it is  perpendicular not orthogonal .... i understand english a little

anonymous · Answer

|dw:1353787063406:dw| i can't draw but ur graph is something like that, both sides of the graph are identic we are asked to find the two points let call the A and B

anonymous · Answer

yes it is thx very much

anonymous · Answer

which language do u speak better?

anonymous · Answer

arabic

anonymous · Answer

oh i speak french so we can only stick to english, back to our question after delopping, i let f(x)=y.... so y=1/2x^2       yx^2=1/2

anonymous · Answer

ah ok je suis algerienne je parle francais ok ok pas probleme ...... merci

anonymous · Answer

peux tu trouver la solution a ton probleme maintenant maintenant ou on doit continuer?

anonymous · Answer

ooooook merci

anonymous · Answer

que ce tu as trouver?