English Deutsch Français Italiano Español Português 繁體中文 Bahasa Indonesia Tiếng Việt ภาษาไทย
All categories

Function of a function
Let U = f(x, y)
X= rcosØ
Y= rsinØ
Show that
1.dy/dx = cosØdu/dr – sinØ/r.du/dx


du/dy=sinØdu/dr+cosØ/r.du/dØ

2006-09-21 00:14:26 · 3 answers · asked by sikirutaye 1 in Science & Mathematics Mathematics

3 answers

if a function depends on a variable nd tht variable again depends on other varible then we apply lebnittz rule
in this case
du/dy = (du/dr). (dr/dy) + (du/dphi).(dphi/dy)


so solve it urself

hope u got ur answer:-))

2006-09-21 01:02:08 · answer #1 · answered by priya 2 · 0 0

U have to take the derivative w.r.t x
1) dx/do= - r sino
2) dy/do= r coso

dy/dx=dy/do x do/dx

2006-09-21 07:40:28 · answer #2 · answered by SAEED AHMAD 2 · 0 0

the answer is 44

(according to HITCH-HIKERS GUIDE TO THE GALAXY....the answer to everything is 44)

2006-09-21 07:22:13 · answer #3 · answered by Jazz 4 · 0 0

fedest.com, questions and answers