Respuesta :
ANSWER
Yes, f is continuous on [0, 2] and differentiable on (0, 2) since polynomials are continuous and differentiable on double-struck R.
[tex]c = 1[/tex]
EXPLANATION
We want to determine whether ,
[tex]f(x) = 4 {x}^{2} - 2x + 3[/tex]
satisfies the Mean Value Theorem, on the interval,
[0,2].
We check to see if the function satisfies all the hypotheses of the Mean Value Theorem.
1. The function is continuous on the closed interval, [0,2]
2. The function is differentiable on the open interval (0,2).
3. There is a c, such that,
[tex]f'(c) = \frac{f(b) - f(a)}{b - a} [/tex]
Since the given function is a polynomial it is continuous on [0,2] and differentiable on (0,3) because polynomials are continuous and differentiable on the entire real numbers.
We now differentiate the function to obtain;
[tex]f'(x) = 8x - 2[/tex]
This implies that;
[tex]f'(c) = \frac{f(2) - f(0)}{2 - 0} [/tex]
[tex]f(2) = 4( {2})^{2} - 2(2) + 3[/tex]
[tex]f(2) = 4( 4) - 4+ 3[/tex]
[tex]f(2) = 15[/tex]
[tex]f(0) = 4( 0) - 2(0) + 3 = 3[/tex]
This implies that:
[tex]8c - 2 = \frac{15 - 3}{2 } [/tex]
[tex]8c - 2 = \frac{12}{2 } [/tex]
[tex]8c - 2 =6[/tex]
[tex]8c = 6 + 2[/tex]
[tex]8c = 8[/tex]
[tex]c = 1[/tex]