Question
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The function is given by

(a) Calculate values of such that is (i) 1 , (ii) 2 , (iii) 4 , (iv) 8 .
(b) Show that if is increased by then the value of doubles.
© A function is given by

Ask by Fuentes Donnelly. in Qatar
Dec 14,2024

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Answer

(a) For , ; for , ; for , ; for , .
(b) Increasing by doubles the value of .

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The Deep Dive

To find the values of such that :
(i) For :
We set . Taking the natural logarithm on both sides gives .
(ii) For :
Setting , we find .
(iii) For :
Here, , leading to .
(iv) For :
We set , resulting in .
Now for part (b):
To show that if is increased by then the value of doubles, we calculate :
Thus, indeed doubles when is increased by .
For part ©, if you wish to introduce , you might consider a function defined similarly, such as where is a constant. This form can model exponential growth or decay, depending on whether is positive or negative, providing a versatile approach to study varying phenomena in the real world, from populations to radioactive decay.

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