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Topic review (newest first)
Don't worry about it, on a math test, I wrote:
dy/dx = 4x - 5, slope at (1, 2) is 3
I've been working out the gradient (and whole equation) of the tangent of certain points on a curve but this new set of questions wants the equation of the normal. I figure I'd just work as I had been and get the equation of the tangent, then simply flip over the gradient and reverse the sign for the normal i.e.