Question

find the domain and range of f(X)=7x^2+4x-1​

Answer 1

Answer:

this is your solution for the following information

Answer 2

Domain: (-∞,∞)

Range: $[-\frac{11}{7},\infty)$

Step-by-step explanation:

Given: $f(x)=7x^2+4x+1$

Domain: It is input value of x of function where function is defined.

Range: It is output value of function for all input.

It is quadratic function.

The domain of quadratic function is all real number.

Domain of f(x) is all real number.

Domain: (-∞,∞)

The vertex of quadratic equation.

$x=-\dfrac{b}{2a}$

$x=-\dfrac{2}{7}$

The y value of vertex at $x=-\dfrac{2}{7}$

$y=-\dfrac{11}{7}$

Range: $[-\frac{11}{7},\infty)$

#Learn more:

Domain and range

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