amaths

2007-06-03 7:58 am
1, X=1-t,y=1-t^2, where t is a parameter
find dy/dx at (1,1) without eliminating the parameter

f(x)=2t+t^2
find dy/dx at(1,1) by differentiating F(x)

回答 (1)

2007-06-03 8:08 am
✔ 最佳答案
dy/dx
= (dy/dt) / (dx/dt)
= (-2t) / -1
= 2t

(x,y) = (1,1), t = 0
dy/dx at (1,1) = 0

唔明問乜
f(x)=2t+t^2
find dy/dx at(1,1) by differentiating F(x)
幫唔到你


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