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## Homework Statement

I need to find the tangent plane of a surface S at a point P without being given the eqn of the surface. I am also given that two curves lie on this surface

## Homework Equations

Point P: (2,1,3)

Curve 1: <2+3t, 1 - (t^2), 3 - 4t + (t^2)>

Curve 2: <1+ (u^2), 2(u^3) - 1, 2u+1>