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junior college 1 | H2 Maths
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Good afternoon! :) just part iii will do thank you!
Date Posted: 3 years ago
Views: 265
Recall that a function and its inverse are mirror images of each other, reflected about the line y = x
Any point (a,b) on a graph of a function is mapped onto (b,a) on the inverse function's graph.
So if (gf)-¹ (x) = 0,
That means the coordinates of this point on the inverse function's graph are (x, 0)
This corresponds to (0,x) on the original function.
Therefore if (gf)-¹ (x) = 0,
gf (0) = x
Simply sub 0 as your x-value in your original function gf to get the answer.
Any point (a,b) on a graph of a function is mapped onto (b,a) on the inverse function's graph.
So if (gf)-¹ (x) = 0,
That means the coordinates of this point on the inverse function's graph are (x, 0)
This corresponds to (0,x) on the original function.
Therefore if (gf)-¹ (x) = 0,
gf (0) = x
Simply sub 0 as your x-value in your original function gf to get the answer.
You should get x = -2
Oh i see! Thank you! :)
See 1 Answer
done
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Good evening Candice! We should get x = -2.
Date Posted:
3 years ago
Thank you so much :)
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