Question:
What is x y dy dx x dy dx y 2 2 2 2 2 4 4 41 6 () equal to?
What is x y dy dx x dy dx y 2 2 2 2 2 4 4 41 6 () equal to?
Options:
- a) 16x
- b) 16y
- c) -16x
- d) -16y Direction for Questions (113-114): Consider the following for the two (02) items that follow: Let ABC be a triangle right-angled at B and AB + AC = 3 units.
- a) 16x
- b) 16y
- c) -16x
- d) -16y Direction for Questions (113-114): Consider the following for the two (02) items that follow: Let ABC be a triangle right-angled at B and AB + AC = 3 units.
correct answer : c)
Explanation:
\ dy
dx
2
=
16 4
4
2
2
()y
x
+
+
2
2
2
dy
dx
dy
dx
=
16 24 16 42
4
22
22
() () () ()
()
yx dy
dx yx
x
+- +
+
dy
dx dx
xdy ()
2
2
22 4
+
= 16y(x2+4) dy
dx
-16x(y2 + 4)
dy
dx dx
xdy ()
2
2
22 4
+
– 16y(x2+4) dy
dx
= -16x(y2 + 4)
() ()x
y
dy
dx x dy
dx
y
2
2
2
2
2
4
4
41 6+
+
+-
= -16x
Solved Paper – 2025 (I)
\ dy
dx
2
=
16 4
4
2
2
()y
x
+
+
2
2
2
dy
dx
dy
dx
=
16 24 16 42
4
22
22
() () () ()
()
yx dy
dx yx
x
+- +
+
dy
dx dx
xdy ()
2
2
22 4
+
= 16y(x2+4) dy
dx
-16x(y2 + 4)
dy
dx dx
xdy ()
2
2
22 4
+
– 16y(x2+4) dy
dx
= -16x(y2 + 4)
() ()x
y
dy
dx x dy
dx
y
2
2
2
2
2
4
4
41 6+
+
+-
= -16x
Solved Paper – 2025 (I)