• We need your support!

    We are currently struggling to cover the operational costs of Xtremepapers, as a result we might have to shut this website down. Please donate if we have helped you and help make a difference in other students' lives!
    Click here to Donate Now (View Announcement)

Maths, Addmaths and Statistics: Post your doubts here!

Messages
248
Reaction score
132
Points
53
i have this question g(x)=x2-xand they have asked for its inverse of g(6)
well when u have to find the inverse of a question u have two options either u form an equation with Y, i.e u put Y=x2-x, u then make X the SOF and for the equation of the inverse u just put X in place of Y in the equation u got but here lets say its not possible! so u must choose the other method, u put the equation u got= the inverse they they told u ,

here it is, x2-x=6

and u rearrange the equation to get x2-x-6=0, and u get X=3 and -2;)
 
Messages
322
Reaction score
175
Points
53
I tried to solve this question, I did the Part (i) and obtained the correct answer, but I cannot get the answer to Part (ii), my question is that
How is X equal to (A + I)-1 or whatever is in the question, please can anyone explain it :( . What is happening in this part?o_O I am not getting it.






Question:
View attachment 18935

Answer:

View attachment 18936

Dude as far as i think, ther is a mistake in this question:
According to me The answer has to be : X = (A-1)-1 * B
 
Messages
248
Reaction score
132
Points
53
i wanted to ask u all one thing is it true that if u do not tick which question u r answering in thee either or section in add maths u will lose all u marks???
 
Top