Repeat Exercise 18 for the case where the displaced profile of the string is as shown in Figure 7.22.
![775_4fc2d31a-2d0f-4356-a1fe-8b5ab648dbed.png](https://secure.tutorsglobe.com/CMSImages/775_4fc2d31a-2d0f-4356-a1fe-8b5ab648dbed.png)
Repeat Exercise 18
A tightly stretched flexible uniform string has its ends fixed at the points x = 0 and x = l. The midpoint of the string is displaced a distance a, as shown in Figure 7.21. If f(x) denotes the displaced profile of the string, express f(x) as a Fourier series expansion consisting only of sine terms
![136_e07be8d7-c25d-4b55-9578-5cccf4678315.png](https://secure.tutorsglobe.com/CMSImages/136_e07be8d7-c25d-4b55-9578-5cccf4678315.png)