Question:
What is dy dx 2 equal to?
What is dy dx 2 equal to?
Options:
- a) 44 4 2 2 () () y x + +
- b) 44 4 2 2 () () y x – –
- c) 16 4 4 2 2 () () y x + +
- d) 16 4 4 2 2 () () y x – –
- a) 44 4 2 2 () () y x + +
- b) 44 4 2 2 () () y x – –
- c) 16 4 4 2 2 () () y x + +
- d) 16 4 4 2 2 () () y x – –
correct answer : c)
Explanation:
We know that
If x = sec q – cos q and y = secnq – cosnq
then (x2 + 4) dy
dx ny
-+
2
22 4()
= 0
(x2 + 4) dy
dx y
-+
2
2244() ()
= 0
dy
dx
2
=
16 4
4
2
2
()y
x
+
+
We know that
If x = sec q – cos q and y = secnq – cosnq
then (x2 + 4) dy
dx ny
-+
2
22 4()
= 0
(x2 + 4) dy
dx y
-+
2
2244() ()
= 0
dy
dx
2
=
16 4
4
2
2
()y
x
+
+