Past Papers’ Solutions | Edexcel | AS & A level | Mathematics | Core Mathematics 1 (C1-6663/01) | Year 2015 | June | Q#7
Question
Given that ,
a. Express in terms of y.
b. Hence, or otherwise, solve
Solution
a)
We have;
We are given;
Therefore;
b)
We are given;
As demonstrated in (a) and given
, therefore;
Now we have two options.
|
|
|
|
|
|
|
Substituting these values in following given equation yields corresponding values of x.
For |
For |
|
|
|
|
|
|
|
|
|
Comments