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What is the value of c when y equals x plus c is a tangent to y equals 3 -x -5x squared?
Wiki User
∙ 6y ago
-2
Kathlyn Feil
Wiki User
∙ 6y agoIf: y = x+c and y = 3-x-5x^2
Then: x+c = 3-x-5x^2
Transposing terms: 2x+5x^2 +(-3+c) = 0
Using the discriminant: 2^2 -4*5*(-3+c) = 0
Solving the discriminant: c = 16/5 or 3.2
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