We start with the function given by the logarithmic expression:
\[
y = \ln(5x^2 - 3x + 4)
\]
Step 2: Differentiate the Function
To find the derivative \( y' \), we apply the chain rule. The derivative of \( \ln(u) \) is \( \frac{1}{u} \cdot \frac{du}{dx} \), where \( u = 5x^2 - 3x + 4 \). Thus, we have:
\[
y' = \frac{1}{5x^2 - 3x + 4} \cdot (10x - 3)
\]
Step 3: Simplify the Derivative
Combining the results, we can express the derivative as:
\[
y' = \frac{10x - 3}{5x^2 - 3x + 4}
\]
Final Answer
The derivative of the function is:
\[
\boxed{y' = \frac{10x - 3}{5x^2 - 3x + 4}}
\]