Question

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

Answer 1

i guess we'll use substitution here ?

Answer 2

lool easly :)

Answer 3

i forgot the method but i have done it by substitute y = e mx

Answer 4

thanks wasiqss

Answer 5

we have to take out complimentary and particular solution right

Answer 6

yes

Answer 7

y'=lambda
so:
\[\lambda ^{2} - \lambda -2=0\]
solving : lambda = 2 and -1
solution:
\[y=C _{1}e ^{2t}+C _{2}e ^{-t}\]

Answer 8

first take out factors of this equation

Answer 9

right myko

Answer 10

one more thing how to write the solution when discriminant is zero , positive & negative

Answer 11

in terms of 0, like we have two roots of lamba =2, then answer will be
c1e^2+c2xe^2

Answer 12

ok

Answer 13

for negative iota aaajate hain

Answer 14

like in terms of sin and cos chale jaata hai

Answer 15

ok wasiq

Answer 16

thank you myko and wasiqss :)

Answer 17

np khocha ;)

Answer 18

khocha tumhari math achi ha :P

Answer 19

haha mujhe pata hai :D teri aapi ne kafi madad ki hai :)

Answer 20

nice lana is also awesome at maths

Answer 21

yeh she is :)

Answer 22

or khocha tum chay pia gi?

Answer 23

lol elaichi wala :)

Answer 24

hum tum ko badam wala chay peli ga

Answer 25

:P

Answer 26

aala aala khocha khush hua , ab khocha ko medal toh dai :D

Answer 27

oh abhi dati ha tum ko medal :P

Answer 28

aala aalah :D

Answer 29

wallah ya tumhari medal :P

Answer 30

chlo khocha hum tum ko programming seekhati ha

Answer 31

seekha seekha wallah :)

Answer 32

<?php
echo 'i <3 khocha :P';
?>
output:
i <3 khocha :P

Answer 33

khoocha ka dil garden gardn hogaya :D

Answer 34

lol wallah coding faluda ha

Answer 35

chlo khocha hum chalti ha :P