Math Problem Statement
find the envelope of cardioid r=a(1+cos(x))
Solution
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Math Problem Analysis
Mathematical Concepts
Polar Coordinates
Cardioid
Envelopes of Curves
Formulas
r = a(1 + cos(θ))
Envelope condition: F(r, θ, c) = 0 and ∂F/∂c = 0
Theorems
Envelope Theorem for a family of curves
Suitable Grade Level
Undergraduate/Advanced High School