prove that

Question

prove that

anonymous · Answer

attachment

anonymous · Answer

You mean prove the golden ratio is equal to... well, something?

anonymous · Answer

yes

anonymous · Answer

Well, you want to prove that the golden ratio
$$\huge \varphi = \frac{1+\sqrt5}{2}$$?

anonymous · Answer

i don't know 
in book, its only written what i have attached

anonymous · Answer

i think its impossible because there is no written golden rule for a question

anonymous · Answer

Well, you can't be expected to prove that
$$\huge \frac{a+b}{a}=\frac{a}b$$outright... there are only so many values of a and b which would make this equation false...

anonymous · Answer

hmm
yes peterpan u r right

anonymous · Answer

@Mertsj

mertsj · Answer

There is something missing in your problem.  Perhaps a diagram?  Because what you have posted is not, in general, true.  Therefore it cannot be proven to be true unless there are some other conditions.

mertsj · Answer

I suspect you were given the golden rectangle and told to prove, using similar figures, that your proportion is true.

mertsj · Answer

http://www.jimloy.com/geometry/golden.htm

mertsj · Answer

http://en.wikipedia.org/wiki/Golden_rectangle

mertsj · Answer

http://wn.com/golden_rectangle Some videos that might help.