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#1 Re: Help Me ! » differentiation. » 2007-12-02 17:02:56
thank you guys, much help 
#2 Help Me ! » differentiation. » 2007-12-01 14:20:30
- sarah.nz
- Replies: 6
The curve y=x² -3x -4 cross the x-axis at P and Q. The tangents to the curve at P and Q meet at R. The normals to the curve at P and Q meet at S. Find the distance RS.
#3 Re: Help Me ! » Help with finding the percentage » 2007-12-01 13:07:21
i would go...
25÷100 × $25000.00 = $6250
#4 Re: Help Me ! » differentiation » 2007-12-01 11:54:47
thanks guys.. helped lots
#5 Help Me ! » differentiation » 2007-12-01 08:36:19
- sarah.nz
- Replies: 6
The tangent to the curve y=6√x at the point (4,12) meets the axes at A and B. Show that the distance AB may be written in the form k√13, and state the value of k.
#6 Re: Help Me ! » differentiation... » 2007-11-30 16:55:16
Ahhh.. thank you, i did all of that except i used the gradient of the tangent for the equation of the normal!! stupid me =p
#7 Help Me ! » differentiation... » 2007-11-30 16:09:45
- sarah.nz
- Replies: 2
Find the equation of the normal to y=x^4 -4x^3 at the point for which x=1/2
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