The condition that the line lx + my + n = 0 may be a normal to the hyperbola 1 2
2
2
2
- = b
y
a
x
is
a) al3
+ 2alm2
+ m2
n = 0 b) 2
2 2 2
2
2
2
2 ( )
n
a b
m
b
l
a +
+ =
c) 2
2 2 2
2
2
2
2 ( )
n
a b
m
b
l
a - + = d) 2
2 2 2
2
2
2
2 ( )
n
a b
m
b
l
a + - =

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The condition that the line lx + my + n = 0 may be a normal to the hyperbola 1 2 2 2 2 - = b y a x is a) al3 + 2alm2 + m2 n = 0 b) 2 2 2 2 2 2 2 2 ( ) n a b m b l a + + = c) 2 2 2 2 2 2 2 2 ( ) n a b m b l a - + = d) 2 2 2 2 2 2 2 2 ( ) n a b m b l a + - =

The condition that the line lx + my + n = 0 may be a normal to the hyperbola 1 2
2
2
2
- = b
y
a
x
is
a) al3
+ 2alm2
+ m2
n = 0 b) 2
2 2 2
2
2
2
2 ( )
n
a b
m
b
l
a +
+ =
c) 2
2 2 2
2
2
2
2 ( )
n
a b
m
b
l
a - + = d) 2
2 2 2
2
2
2
2 ( )
n
a b
m
b
l
a + - =

2 Answers

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The condition that the line lx + my + n = 0 may be a normal to the hyperbola 1 2 2 2 2 - = b y a x is a) al3 + 2alm2 + m2 n = 0 b) 2 2 2 2 2 2 2 2 ( ) n a b m b l a + + = c) 2 2 2 2 2 2 2 2 ( ) n a b m b l a - + = d) 2 2 2 2 2 2 2 2 ( ) n a b m b l a + - =

The condition that the line lx + my + n = 0 may be a normal to the hyperbola 1 2 2 2 2 - = b y a x is a) al3 + 2alm2 + m2 n = 0 b) 2 2 2 2 2 2 2 2 ( ) n a b m b l a + + = c) 2 2 2 2 2 2 2 2 ( ) n a b m b l a - + = d) 2 2 2 2 2 2 2 2 ( ) n a b m b l a + - =

2 Answers

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The condition that the line lx + my + n = 0 may be a normal to the hyperbola 1 2
2
2
2
- = b
y
a
x
is
a) al3
+ 2alm2
+ m2
n = 0 b) 2
2 2 2
2
2
2
2 ( )
n
a b
m
b
l
a +
+ =
c) 2
2 2 2
2
2
2
2 ( )
n
a b
m
b
l
a - + = d) 2
2 2 2
2
2
2
2 ( )
n
a b
m
b
l
a + - =