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Solve the differential equation y″ – y′ – 2 y = 0 ? (show the method to solve differential eq with constant coefficient)

Mathematics
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i guess we'll use substitution here ?
lool easly :)
i forgot the method but i have done it by substitute y = e mx

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Other answers:

thanks wasiqss
we have to take out complimentary and particular solution right
yes
y'=lambda so: \[\lambda ^{2} - \lambda -2=0\] solving : lambda = 2 and -1 solution: \[y=C _{1}e ^{2t}+C _{2}e ^{-t}\]
first take out factors of this equation
right myko
one more thing how to write the solution when discriminant is zero , positive & negative
in terms of 0, like we have two roots of lamba =2, then answer will be c1e^2+c2xe^2
ok
for negative iota aaajate hain
like in terms of sin and cos chale jaata hai
ok wasiq
thank you myko and wasiqss :)
np khocha ;)
khocha tumhari math achi ha :P
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nice lana is also awesome at maths
yeh she is :)
or khocha tum chay pia gi?
lol elaichi wala :)
hum tum ko badam wala chay peli ga
:P
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oh abhi dati ha tum ko medal :P
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