Advanced Math/vector

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Question
"how to solve to find u value

<3,-7> = (9/10)<-1,-3> + u"

Answer
Notation here is not clear. Are <3, -7> and <-1, -3> points or notation for a special vector? What is u"? Is it just u with an endquote? Is it the 2nd derivative wrt time of u?  If u" is an ordered pair denoting a vector from the origin, then

u" = (u1, u2) = < 3 +(9/10), -7 + (9/10)3 >.

Let me know if this is what you have in mind. Please be more careful with your notation and explain your terms.

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randy patton

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college mathematics, applied math, advanced calculus, complex analysis, linear and abstract algebra, probability theory, signal processing, undergraduate physics, physical oceanography

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26 years as a professional scientist conducting academic quality research on mostly classified projects involving math/physics modeling and simulation, data analysis and signal processing, instrument development; often ocean related

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J. Physical Oceanography, 1984 "A Numerical Model for Low-Frequency Equatorial Dynamics", with M. Cane

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M.S. MIT Physical Oceanography, B.S. UC Berkeley Applied Math

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