Question

find the domain and range of 3-2x​

Answer 1

Answer:

Domain; x∈R Range; f(x)≤ 3. Explanation: It is straightforward when we sketch the function; graph{3-2x^2 [-10, 10, -5, ...

Domain; x∈R Range; f(x)≤3 Explanation: It is straightforward when we sketch the function; graph{3-2x^2 [-10, 10, -5, 5]} Hence x∈R And we can ...

Answer 2

Answer:

Domain;

x∈R

Range;

f(x)≤3

Explanation:

It is straightforward when we sketch the function; graph{3-2x^2 [-10, 10, -5, 5]}

Hence

x∈R

And we can prove that the greatest value of f(x)

is 3, as

f(0)=3

, and as the porabola is negative, then any other value of x is ≤3

Hence

f(x)≤3

and

x∈R

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