Question

the co domain of f : a →b where a={2,3,5} f(x) = 2x-1 can be taken as
a. {3,5,7}
b. {3,5,9,11}
c. {5,9}
d. {3,5}


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Answer 1

Answer:

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Using f (x) = x² - 1, x ∈ A we have

f(1) = 0,

f(2) = 3,

f(3) = 8,

f(4) = 15

We observe that every element in set A has unique image in set B.

Therefore, f is a mapping from A to B.

Answer 2

Answer:

Evaluate : $\sqrt{ \frac{1 + x}{1 - x} dx \: x≠1}$

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