On a drawing of a model airplane, the scale used is 1 in.:3 ft. How many feet would 4.5 inches represent?
1 answer:
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Answer:
x =
Step-by-step explanation:
Given function;
y = 5 + x - x²
To find the maximum value, follow these steps
(i) Find the first derivative (which is the slope) of the given function with respect to x. i.e;
=
=
=
(ii) From the result in (i) determine the value of x for which the slope is zero. i.e.
x for which
1 - 2x = 0
=> 1 = 2x
=> x =
Therefore, the value of x for which the function is maximum is