Tutorial questions 1

1.I

-exposants



de late
are not
a
in ear
linear


So: order= 3

non
linear(*)*

+
4) +
u =


coscr
order=
2
-

u f(r)
=




Ist non linear=
cos(r +


4)
2nd deviv.
derivative ifit was cus
(r) it would
be linear


10) udv+(V+uv-ne") du 0
=




a) v is dependant variable


-ve")
ne +(v uv 0 - it's linear
->
=
+




->
ua (1+
-
)r 4e4
=




e inecer
linear



b) u is dependent variable

u
(v
+ +

av -

ueY) = 0


non linear
=>




utvan twar anatthe
-




-




+and- are linear
X, =
e" are non linear


exponent