Jason Hu

Budget: $15


Find the points on the circle x^2 + y^2 = 16 where tangents have a gradient of 1 and explain what it would look like in a sketch.


Tutor Jack Kim

(d/dx)x^2+y^2 = (d/dx)16 = 2x+2yy'=0 or y' = -y/x For this to be possible, x = -...

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