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Functions Question
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Topic: Functions Question (Read 1032 times)
Dania
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Functions Question
«
on:
October 06, 2010, 09:55:24 pm »
A function is defined by g:x = 3-2sinx, for 0°
<
x
<
A°, where A is a constant.
Q. (i) State the largest value of A of which g has an inverse.
(ii) When A has this value, obtain an expression, in terms of x, for g
-1
(x)
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Freaked12
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Re: Functions Question
«
Reply #1 on:
October 06, 2010, 10:15:31 pm »
https://studentforums.biz/math-146/cie-math-p1-10369/msg350650/#msg350650
Its already done
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Dania
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Re: Functions Question
«
Reply #2 on:
October 06, 2010, 10:21:29 pm »
Grr. Still don't get it. By the way, this is a different paper. Same concept, I know. But it's just stated in that link you gave me, I want someone to explain to me how to get it.
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Freaked12
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Re: Functions Question
«
Reply #3 on:
October 06, 2010, 10:31:45 pm »
Which subject do you want help in
Its not Pure mathematics?
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Dania
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Re: Functions Question
«
Reply #4 on:
October 06, 2010, 10:33:57 pm »
It's just this question I posted. Yeah, it is pure maths.
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Freaked12
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Re: Functions Question
«
Reply #5 on:
October 06, 2010, 10:52:53 pm »
A function f is one-to-one if it never happens that a is not equal to b, but f(a) = f(b). Equivalently, one-to-one functions are those functions whose graphs pass the horizontal line test: every horizontal line passes through at most one point of its graph.
So by looking at the graph the largest value through which the horizontal line passes through is 3/2 pie
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Freaked12
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Re: Functions Question
«
Reply #6 on:
October 06, 2010, 11:09:56 pm »
and the last part is already done
and he explained it quite clearly.
Specify what you are not getting?
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IGCSE/GCSE/O & A Level/IB/University Student Forum
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Math
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Functions Question