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#1 Re: Help Me ! » c3 inverse functions :s » 2007-08-24 08:04:06
well when you put it like thaaat! 
I feel slightly retarded... thanks for your help guys =]]]]
#2 Re: Help Me ! » c3 inverse functions :s » 2007-08-24 06:05:06
thanks, I get it more.. but I can't see how you've gone from
sorry, can you show that rearrangement :s
#3 Re: Help Me ! » c3 inverse functions :s » 2007-08-24 04:43:13
or even, new question, same concept, which should hopefully clear up both.
find
trying to make x the subject of the formula:
therefore,
but the answer in the back of the book is:
sorry about the double post, didn't want to clutter that last bit up :s
#4 Re: Help Me ! » c3 inverse functions :s » 2007-08-24 04:01:51
ty I get that, but (and here is where I might confuse myself a bit more) is that method (from the last two lines of your post) the same as saying that:
if yes, then cool, if no, then.. err.. :s
#5 Help Me ! » c3 inverse functions :s » 2007-08-24 01:50:50
- timberwo7ves
- Replies: 7
hmm trying to find the inverse function of f(x), where x is used twice, never done before :s
trying to find
if you have the Heinemann C3 book, it's page 27, mixed exercise 2F, q7
I've tried splitting into two parts, i.e. the numerator inverted would be
and the denominator would be , but I'm not sure where to go from there, if that's even the right steps to take in the first place :s=]]
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