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KreshnikBest ResponseYou've already chosen the best response.0
do you have a graph yet? ... I can get you one !
 2 years ago

math456Best ResponseYou've already chosen the best response.0
dw:1333410736966:dw yea its like this!
 2 years ago

math456Best ResponseYou've already chosen the best response.0
so for Q.2 we have to graph the inverse, right?
 2 years ago

KreshnikBest ResponseYou've already chosen the best response.0
is this what is required at option a)?? ...I don't get it well enough (I'm not American/British :S )
 2 years ago

KreshnikBest ResponseYou've already chosen the best response.0
two lines... f(x)=4x8 and y=x
 2 years ago

math456Best ResponseYou've already chosen the best response.0
umm we have to find inverse first which is x+8/4=y and graphing it gives me dw:1333411085687:dw
 2 years ago

KreshnikBest ResponseYou've already chosen the best response.0
\[\Large f^{1}(x) =\frac{1}{f(x)}\] ... so that should be . .\[\LARGE f^{1}(x)=\frac{1}{4x8}\] is it??
 2 years ago

math456Best ResponseYou've already chosen the best response.0
and ur graph is answer to part 5
 2 years ago

math456Best ResponseYou've already chosen the best response.0
umm our teacher tell us that u switch letters first & then solve for y to get the inverse..
 2 years ago

math456Best ResponseYou've already chosen the best response.0
do u know how to do Q.3?
 2 years ago

KreshnikBest ResponseYou've already chosen the best response.0
I know it like I wrote it !! O_O ... show me your way then!
 2 years ago

math456Best ResponseYou've already chosen the best response.0
i already told u inverse seems like x+8/4=y
 2 years ago

math456Best ResponseYou've already chosen the best response.0
what does it mean to test the symmetry accross the line y=x?
 2 years ago

KreshnikBest ResponseYou've already chosen the best response.0
I don't know it either... but tell me, how do you get x+8/4=y ... show me steps I want to see them if it's possible ! O_O
 2 years ago

math456Best ResponseYou've already chosen the best response.0
y=f(x)=4x8 x=4y8 (switched) x+8/4=y (solve for y)
 2 years ago

KreshnikBest ResponseYou've already chosen the best response.0
still dizzy... I don't know.. OK now tell me if we have \[\LARGE f(x)=\frac{1x}{1+x}\] how does f^{1} go?
 2 years ago

slaaibakBest ResponseYou've already chosen the best response.1
the inverse of f(x) is not 1/f(x)
 2 years ago

KreshnikBest ResponseYou've already chosen the best response.0
ok I guess I'm wrong, but I want to learn it.. :(
 2 years ago

slaaibakBest ResponseYou've already chosen the best response.1
To find the inverse, switch x and y, and write in terms of y.
 2 years ago

KreshnikBest ResponseYou've already chosen the best response.0
well then @math456 is right !!...
 2 years ago

math456Best ResponseYou've already chosen the best response.0
f(x)=1x/1+x x=1y/1+y x(1+y)=1y x+xy=1y y=1x+xy
 2 years ago

slaaibakBest ResponseYou've already chosen the best response.1
y = (1  x)/(1 + x) Switching the x and y: x = (1y)/(1+y) x + xy = 1  y y(1+x) = 1x y = (1x)/(x+1)
 2 years ago

slaaibakBest ResponseYou've already chosen the best response.1
with which number do you need help with?
 2 years ago

math456Best ResponseYou've already chosen the best response.0
i mean like for a we hv to reflect the graph of f across the diagonal line y=x, how?
 2 years ago

slaaibakBest ResponseYou've already chosen the best response.1
draw the y=x line and flip the line over it
 2 years ago

slaaibakBest ResponseYou've already chosen the best response.1
I mean, flip it over the line
 2 years ago

math456Best ResponseYou've already chosen the best response.0
dw:1333412317919:dw like this?
 2 years ago

math456Best ResponseYou've already chosen the best response.0
fliping it will bedw:1333412361021:dw
 2 years ago

slaaibakBest ResponseYou've already chosen the best response.1
That's y=x yes. Best way to see it is to draw the line, then folding the paper over y=x and to see how the graph reflects
 2 years ago

slaaibakBest ResponseYou've already chosen the best response.1
Noo... you flip the function f(x) over the line y=x.
 2 years ago

math456Best ResponseYou've already chosen the best response.0
so for Q2a we hv to flip over the f(x) ?
 2 years ago

math456Best ResponseYou've already chosen the best response.0
dw:1333412477378:dw so its gona be like this?
 2 years ago

math456Best ResponseYou've already chosen the best response.0
how about 2b? and question 5 ask the same thing as 2a, right?
 2 years ago

slaaibakBest ResponseYou've already chosen the best response.1
noooo dw:1333412696801:dw
 2 years ago

slaaibakBest ResponseYou've already chosen the best response.1
question 2 b: get a few points (x,y) then change them to (y,x) and draw them
 2 years ago

math456Best ResponseYou've already chosen the best response.0
and 5 is dw:1333412939248:dw ?
 2 years ago

slaaibakBest ResponseYou've already chosen the best response.1
Not exactly sure what they mean..
 2 years ago

math456Best ResponseYou've already chosen the best response.0
so for 2b i got a graph like this dw:1333413313588:dw
 2 years ago

slaaibakBest ResponseYou've already chosen the best response.1
... I honestly don't know how you got that. Look at my graph. Thats how f, y=x and f^1 looks like
 2 years ago

math456Best ResponseYou've already chosen the best response.0
that was for f(x) and if I reflect it, i'll get dw:1333413484096:dw
 2 years ago
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