Answer Happy

Please substitute the value of T with 45 and answer the question
clearly step by step and thanks.
a. The energy (E) stored in an inductor is given by E = S, 7(x2 – 2x)e -2x dx. Evaluate E. b. Let the force (F) acting on a spring is given by F = (T* 50)33 + (T* 1000)s, where s is the displacement from its original length. Find the work done (W) to compress the spring by 0.3m which is given by W = so'm 0.3 m F ds. T=45