Question Number 66161 by peter frank last updated on 09/Aug/19 Answered by mr W last updated on 10/Aug/19 $${if}\:{a}\:{line}\:{y}={mx}+{c}\:{tangents}\:{the}\:{ellipse} \\ $$$$\frac{{x}^{\mathrm{2}} }{{a}^{\mathrm{2}} }+\frac{{y}^{\mathrm{2}} }{{b}^{\mathrm{2}} }=\mathrm{1}…
Question Number 131599 by ajfour last updated on 06/Feb/21 Commented by ajfour last updated on 06/Feb/21 $${Find}\:{coordinates}\:{of}\:{P},\:{in}\:{terms} \\ $$$${of}\:{a},{b},\:{and}\:{R}. \\ $$ Answered by mr W…
Question Number 66055 by ajfour last updated on 08/Aug/19 Commented by ajfour last updated on 08/Aug/19 $${Eq}.\:{of}\:{ellipse}\:\:\frac{{x}^{\mathrm{2}} }{{a}^{\mathrm{2}} }+\frac{\left({y}−{b}\right)^{\mathrm{2}} }{{b}^{\mathrm{2}} }=\mathrm{1} \\ $$$${parabola}\:{touches}\:{the}\:{x}-{axis} \\ $$$${and}\:{the}\:{ellipse}\:{and}\:{passes}…
Question Number 131584 by mr W last updated on 06/Feb/21 Commented by mr W last updated on 06/Feb/21 $${find}\:{R}=? \\ $$ Answered by ajfour last…