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Find the equation of a tangent given parametric equations

1.) Find and equation of the tangent to the curve at the point corresponding to the given value of the parameter

x= cos t + sin 2t, y= sin t + cos 2t (t=0)

2.) Find dy/dx and d^2/dx^2 for which values of t is the curve concave upward

x= t + ln t, y = 1 - ln t

Solution Summary

The equation of a tangent is found given parametric equations. The solution is detailed and well presented.