If x-y-1-2-3-4 then check whether f-x-y-y-x-1 is a function-

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Strictly Increasing Functions

If x,y∈1,2,...

Question

If $x, y \in {1, 2, 3, 4}$ then check whether $f = {(x, y) : y = x + 1}$ is a function?

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Solution

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x, y \in {1, 2, 3, 4}

f = {(x, y) : x + y > 4}

If f: X $\to$ Y is a function defined by f(x) = $2 x^{2} - x$ , check whether the function is an odd function or even function.

f : {1, 2, 3, 4} \to {1, 2, 3, 4, 5, 6, 7, 8, 9}

f

f (x) = log (x + \sqrt{1 + x^{2}})

X = {1, 2, 3, 4}

f = {(1, 1), (2, 3), (3, 4), (4, 1)}

X

X

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