Stationary points

[misty imp]

why is it only one mark? confusion

[meager sky]

because all you do is plug a value in the secpnd derivative

which has already been given

and see whether its <0 or >0

then u will know whether its a max or a min

[misty imp]

but which value?

oh it will always be >0

i see

[meager sky]

yhhh