The image of the interval [1,3] under the
mapping f:R→R, given by
f(x) = 2x” – 24x+107
is
Answers
Answer:
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SOLUTION
TO DETERMINE
The image of the interval [1,3] under the mapping f : R → R given by f(x) = 2x³ - 24x + 107
EVALUATION
Here the mapping f : R → R given by
f(x) = 2x³ - 24x + 107
So f(x) is a polynomial function
So it is continuous for all real values of x
So f(x) is continuous in interval [ 1 , 3 ]
Now
So the minimum value of f(x) = 75 at x = 2
Maximum value of f(x) = 89 at x = 3
Hence the required image of the interval [1,3] under the mapping f : R → R given by f(x) = 2x³ - 24x + 107 is [ 75 , 89 ]
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