Just to be clear:
Image = Codomain
It's just the way we call it in french...
I don't know how to delete a thread but please don't waste time here. I made a typo in the initial equation and that is why sh*t hit the fan....
Huge thanks to everyone!
I mostly try to do it myself first but then validate with what you guys provide.
Sorry I should've mentionned I'm searching for a solution using a graph and linear equations.
EDIT:
It's actually PERPENDICULAR, not PARALLEL.
... I've been working on this for so much time and was wondering why k= 11/9 wasn't my answer haha
k=11/9 is the answer provided in the solution of the book.
Happy birthday sir!
A huge thanks for all the amazing work and help you bring here!
I wish you only the best!
Nevermind I found how
(ax-bx-ay+by ) / (x-y)
(x (a-b) -y (a-b) ) / (x-y)
((x - y ) ( a - b ) )/ (x-y)
a - b
Sorry double post, please answer on the more recent thread -___-
D**n but now I cannot find the other thread because it's been deleted...
I get what you're doing but how can I put this into maths:
Set both factors to 0 and the only solution to this that makes sense is that a = 12 cm
Here are the solutions from the book:
One side is 9cm and the other 12cm.
Also, I think you forgot to square the hypotenuse when starting. That might be the problem...
Huge thanks for your help!
Only thing:
wouldn't it be
2+sqrt3 "greater or equal to" x "lesser or equal to" 2-sqrt3
2+sqrt3 < x < 2-sqrt3
???
I am sorry.
I had this bug happening with 2 threads:
I post something, then it doesn't appear in my watchlist.
So I automatically assumed it wasn't posted at all and reposted.
I will be more careful I promise.
My bad, didn't picture it this way in my mind.
I already know this, don't know why I didn't think of it that way on this one...
Thanks!
Awesome!
Could you just explain to me how you go from:
sqrt (k + x ) = 7 - sqrt(x) square both sides
to
k + x = 49 - 14 sqrt(x) + x
I don't get how ( - sqrt (x) )^2 = -14sqrt(x) + x
Here is the exact problem given in my class:
"Resolve in X":
sqrt (k + x) + sqrt (x) - 7 = 0
Now here is the answer provided by the book:
( k^2 - 98k + 2401 ) / 196 where k ∈ R
+386 