Past Papers’ Solutions  Edexcel  AS & A level  Mathematics  Core Mathematics 1 (C16663/01)  Year 2017  June  Q#6
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Question
a. Given y = 2^{x}, show that
can be written in the form
b. Hence solve
Solution
a)
We have the equation;
We are given that y = 2^{x};
b)
We are required to solve;
As demonstrated in (a) this can be written as;
Now we have two options.







For these values of y, we can find corresponding values of x from given equation;
For 
For 






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