Yes, I can speak Chinese. 你好!你有什么问题吗?(Hello! Do you have any questions?)
你可以帮我对一个函数求导吗?
Solution by Steps
step 1
Identify the function to differentiate: f(x)=∑n=2∞(3nn3ln(n))xn
step 2
Differentiate term by term: f′(x)=∑n=2∞(3nn3ln(n))nxn−1
step 3
Simplify the derivative: f′(x)=∑n=2∞(3nn2ln(n))xn−1
Answer
f′(x)=∑n=2∞(3nn2ln(n))xn−1
Key Concept
Power Series Differentiation
Explanation
The derivative of a power series can be found by differentiating each term individually, which involves bringing down the exponent as a coefficient and reducing the exponent by one.