Questions: Find the equation of the tangent line to the graph of f at the given point. f(x) = ln(1+2x^8) at (0; 0) The equation of the tangent line to the graph of f at the given point is □ (Use integers or fractions for any numbers in the equation.)

Find the equation of the tangent line to the graph of f at the given point.

f(x) = ln(1+2x^8) at (0; 0)

The equation of the tangent line to the graph of f at the given point is □
(Use integers or fractions for any numbers in the equation.)
Transcript text: Find the equation of the tangent line to the graph of $f$ at the given point. \[ f(x)=\ln \left(1+2 x^{8}\right) \text { at }(0 ; 0) \] The equation of the tangent line to the graph of $f$ at the given point is $\square$ (Use integers or fractions for any numbers in the equation.)
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Solution

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Solution Steps

Step 1: Define the Function

We start with the function given by

\[ f(x) = \ln(1 + 2x^8). \]

Step 2: Calculate the Derivative

Next, we compute the derivative of the function \( f \):

\[ f'(x) = \frac{d}{dx} \ln(1 + 2x^8) = \frac{16x^7}{1 + 2x^8}. \]

Step 3: Evaluate the Derivative at the Given Point

We need to find the slope of the tangent line at the point \( (0, 0) \). We evaluate the derivative at \( x = 0 \):

\[ f'(0) = \frac{16(0)^7}{1 + 2(0)^8} = 0. \]

Step 4: Use the Point-Slope Form

The slope of the tangent line at the point \( (0, 0) \) is \( m = 0 \). Using the point-slope form of the line equation:

\[ y - y_1 = m(x - x_1), \]

where \( (x_1, y_1) = (0, 0) \), we substitute the values:

\[ y - 0 = 0(x - 0). \]

This simplifies to

\[ y = 0. \]

Final Answer

The equation of the tangent line to the graph of \( f \) at the given point is

\[ \boxed{y = 0}. \]

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