1. Let's clarify your question: You mentioned having trouble with the "d operator." 2. If you're referring to differentiation in calculus, the "d operator" often means \( \frac{d}{dx} \), which represents the derivative with respect to \(x\). 3. Differentiation is used to find the rate of change of a function. For example, if \( y = x^2 \), then using the derivative operator: $$ \frac{d}{dx} x^2 = 2x $$ 4. Could you please specify if your snag is in applying the derivative, understanding its meaning, or something else? 5. Once I understand your exact issue, I can provide detailed steps to help you understand or solve your problem with the d operator.