Tips for Beginners for the TI 89 Calculator

If you have one conic to graph, key the above formula in for y1= with the letters (A, B, C, etc.) replaced with their values. For example for x² - 4xy + 4y² + 10x - 30 = 0 (i.e. A = 1, B = -4, C = 4, D = 10, E = 0, F = -30), key in y1 = (4x+{1,-1} ((-4x)^2-4*4(x^2+10x-30)))((2*4). ................
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