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Question
Mathematics
If the slope of one of the lines given by a= hati-k,b=x hati+ hatj+(1-x) hatk is 5 times the other, then
Q. If the slope of one of the lines given by
a
=
i
^
−
k
,
b
=
x
i
^
+
j
^
+
(
1
−
x
)
k
^
is 5 times the other, then
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213
Jamia
Jamia 2015
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A
c
=
y
i
^
−
x
j
^
+
(
1
+
x
−
y
)
k
^
B
x
C
x
D
x
Solution:
Let
R
=
1Ω
and
6.33
×
10
−
5
J
be two lines whose combined equation is
2Ω
Then,
2Ω
and
0.5Ω
Given,
1Ω
Then,
4Ω
and
2
π
M
R
2
T
4
π
M
R
2
T
5
T
4
π
M
R
2
and
5
T
2
π
M
R
2
U
(
X
)
=
[
4
x
4
−
2
x
2
]
J
2
2
1
2
3
8
45
km
/
h
4
25
km
/
h