Hardy Harper
10/03/2024 · High School
For \( f(x)=3 x^{2}+9 x+4 \), find the equation of the tangent line at the following values of \( x \). (a) \( x=1 \) The equation of the tangent line at \( x=1 \) is (b) \( x=-1 \) The equation of the tangent line at \( x=-1 \) is
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(a) The equation of the tangent line at \( x = 1 \) is \( y = 15x + 1 \).
(b) The equation of the tangent line at \( x = -1 \) is \( y = 3x + 1 \).
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