Sagot :
Answer:
Step 1
We first consider the definition of Bessel function of order n and differentiate it w.r.t. x.
Step 2
Let us now multiply both sides by x, in the above derivative of Jn. After this we add the powers of two (x/2) terms. This will help us change the power of (x/2) back to its original value.
Step 3
Next, we split the summation in to two parts by opening the brackets of the term (n + 2r). By doing this, we observe that the first summation is the definition of Jn. In th...
Step-by-step explanation:
sorry i can't put the picture the example