Answer:y=
Acosx+Bsinx +cosx ln(cosx)+x sinx
Step-by-step explanation:
given equation y''+y=secx
auxiliary equation
so CF is y=Acosx+Bsinx
now
using wronskian formula
=
now f(x)=secx
now particular integrals are
PI=cosx ln(cosx)+x sinx
total solution
y= C.F+P.I
y=Acosx+Bsinx +cosx ln(cosx)+x sinx
(x , y) = (-4 , 6) There you go
Answer:
145
Step-by-step explanation:
85+60
Your equation is correct.