Inverse function question (1 Viewer)

[michaeljennings]

http://www.boardofstudies.nsw.edu.au/hsc_exams/hsc2006exams/pdf_doc/maths_ext1_06.pdf
Could someone explain to me how to do question 5b. Its on inverse functions

 

[ohexploitable]

differentiate

show that derivative is always positive i.e. always increasing

so no turning points

i.e. it's a 'one-to-one' function

so delicious marblecake

 

[michaeljennings]

what does a one to one function mean

 

[cutemouse]

what does a one to one function mean

One value of x implying one value of y AND vice versa.

 

[michaeljennings]

ohh makes sense now thanks guys