13.07.2015 Views

Mathematical Methods for Physics and Engineering - Matematica.NET

Mathematical Methods for Physics and Engineering - Matematica.NET

Mathematical Methods for Physics and Engineering - Matematica.NET

SHOW MORE
SHOW LESS

You also want an ePaper? Increase the reach of your titles

YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.

14.4 EXERCISES14.5 By finding suitable integrating factors, solve the following equations:(a) (1 − x 2 )y ′ +2xy =(1− x 2 ) 3/2 ;(b) y ′ − y cot x +cosecx =0;(c) (x + y 3 )y ′ = y (treat y as the independent variable).14.6 By finding an appropriate integrating factor, solvedydx = − 2x2 + y 2 + x.xy14.7 Find, in the <strong>for</strong>m of an integral, the solution of the equationα dydt + y = f(t)<strong>for</strong> a general function f(t). Find the specific solutions <strong>for</strong>(a) f(t) =H(t),(b) f(t) =δ(t),(c) f(t) =β −1 e −t/β H(t) withβ

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!