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SCORPION-xisa [38]
3 years ago
6

Assuming that the equation defines x and y implicitly as differentiable functions xequals=​f(t), yequals=​g(t), find the slope o

f the curve xequals=​f(t), yequals=​g(t) at the given value of t. x^3+3t^2 =13, 2y^3−3t^2= 42, t=2. The slope of the curve at t=2 is what?
Mathematics
1 answer:
Artist 52 [7]3 years ago
5 0

Answer:

\frac{-1}{18}

Step-by-step explanation:

Given that x and y are implicitly as differentiable functions.

xequals=​f(t), yequals=​g(t),

x^3+3t^2 =13,

2y^3-3t^2= 42

we have to get value of x and y at t =2

x^3+3(4) = 13\\x =1\\2y^3-12 = 42\\y^3 = 27\\y=3

we have to find the slope of the curve at t=2

i.e. we have to find \frac{dy}{dx}

=\frac{\frac{dy}{dt} }{\frac{dx}{dt} } at t=2

x^3+3t^2 =13\\3x^2 \frac{dx}{dt} +6t = 0\\2y^3-3t^2= 42\\6y^2 \frac{dy}{dt} -6t = 0\\

Substitute the values of x and y and also t in these equations to get

3(1)^2 \frac{dx}{dt} +6(2) = 0\\\frac{dx}{dt} =-4\\6(3)^2 \frac{dy}{dt} -6(2)= 0\\\frac{dy}{dt}=\frac{2}{9}

Slope = \frac{2/9}{-4}=\frac{-1}{18}

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