Suppose that g is a function of two independent variables that has continuous partial derivatives, and consider the points P(7,8), Q(20,8), R(7,3) and S(18,6). You are given that the directional derivative of g at P in direction PQ is 6, whilst the directional derivative of g at P in direction PR is 2. ->> Find the directional derivative of g at P in direction PS. D→g(P) = PS

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Chapter2: Second-order Linear Odes
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Suppose that g is a function of two independent variables that has continuous partial derivatives, and consider the points P(7,8), Q(20,8), R(7,3) and
S(18,6).
You are given that the directional derivative of g at P in direction PQ is 6, whilst the directional derivative of g at P in direction PR is 2.
Find the directional derivative of g at P in direction P.S.
D→g(P) =
PS
Transcribed Image Text:Suppose that g is a function of two independent variables that has continuous partial derivatives, and consider the points P(7,8), Q(20,8), R(7,3) and S(18,6). You are given that the directional derivative of g at P in direction PQ is 6, whilst the directional derivative of g at P in direction PR is 2. Find the directional derivative of g at P in direction P.S. D→g(P) = PS
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