Recent content by Portal.Leaf

Thanks! I'll be working on it now. :) UPDATE: I followed your instructions and had a lot of substitutions. Finally, I got it right! Thank you so much!

Homework Statement Obtain the differential equation of the family of plane curves described: Circles tangent to the x-axis. Homework Equations (x-h)^2 + (y-k)^2 = r^2 The Attempt at a Solution I tried to answer this question using the same way I did on a problem very similar to this...

Thanks for all your replies. 1MileCrash was right. The answer is indeed y''' = 0. Thanks for helping me check my answer!

Homework Statement Eliminate the arbitrary constants of the equation: ax2 + bx + cHomework Equations (Concept) According to my instructor, having n arbitrary constants makes an nth-order differential equation.The Attempt at a Solution I tried to differentiate 'til I get a third derivative so I...