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Calculate the derivative numerically.

Given [tex]\( f(x) = 2x^2 \)[/tex], find the derivative at [tex]\( x = 2 \)[/tex] with [tex]\( h = 0.1 \)[/tex].

[tex]\[
\begin{array}{l|l}
x & f(x) \\
\hline
2 & f(2) \\
2.1 & f(2 + 0.1) \\
2.2 & f(2 + 2 \cdot 0.1) \\
\end{array}
\][/tex]


Sagot :

Claro, vamos a calcular la derivada numérica de la función [tex]\( f(x) = 2x^2 \)[/tex] en el punto [tex]\( x=2 \)[/tex] utilizando un incremento [tex]\( h = 0.1 \)[/tex]. Vamos a seguir estos pasos:

1. Calcular el valor de la función en [tex]\( x = 2 \)[/tex].
2. Calcular el valor de la función en [tex]\( x = 2 + 0.1 = 2.1 \)[/tex].
3. Calcular el valor de la función en [tex]\( x = 2 + 2(0.1) = 2.2 \)[/tex].

[tex]\[ \begin{array}{l|l} x & f(x) \\ \hline 2 & f(2) \\ 2.1 & f(2.1) \\ 2.2 & f(2.2) \\ \end{array} \][/tex]

### Paso 1: Calcular [tex]\( f(2) \)[/tex]

Para [tex]\( x = 2 \)[/tex]:

[tex]\[ f(2) = 2(2)^2 = 2 \times 4 = 8 \][/tex]

Entonces:

[tex]\[ f(2) = 8 \][/tex]

### Paso 2: Calcular [tex]\( f(2.1) \)[/tex]

Para [tex]\( x = 2.1 \)[/tex]:

[tex]\[ f(2.1) = 2(2.1)^2 = 2 \times 4.41 = 8.82 \][/tex]

Entonces:

[tex]\[ f(2.1) = 8.82 \][/tex]

### Paso 3: Calcular [tex]\( f(2.2) \)[/tex]

Para [tex]\( x = 2.2 \)[/tex]:

[tex]\[ f(2.2) = 2(2.2)^2 = 2 \times 4.84 = 9.68 \][/tex]

Entonces:

[tex]\[ f(2.2) = 9.68 \][/tex]

Resumen de los valores calculados:

[tex]\[ \begin{array}{l|l} x & f(x) \\ \hline 2 & 8 \\ 2.1 & 8.82 \\ 2.2 & 9.68 \\ \end{array} \][/tex]

Estos son los valores de [tex]\( f(x) \)[/tex] en [tex]\( x = 2 \)[/tex], [tex]\( x = 2.1 \)[/tex], y [tex]\( x = 2.2 \)[/tex] respectivamente.