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A function assigns the values. The function f = xy²-2x² satisfies a conservative vector field F = ∇f.
<h3>What is a Function?</h3>A function assigns the value of each element of one set to the other specific element of another set.
Given F(x,y) = (y² - 4x) i + 2xy j, and it is needed to be known that,
Let's look for a primitive of y²-4x with regard to x. Because we regard y (and y²) as constants, a primitive of y² is xy², just as a primitive of k is xk (because we treat y² as a constant). Because a primitive of x equals x²/2, a primitive of 4x is 2x². As a result, a primitive of y²-4x is xy²-2x². We can get any other primitive by adding constants, but because we considered y as a constant, we have that.
f(x,y) = xy²-2x²+c(y)
where c(y) only depends on y (thus, it is constant respect with x).
To learn more about c(y), we shall deduce the formula in terms of y.
Thus, d/dy is constant. We can take f(x,y)=xy²-2x². This function f satisfies that F = ∇f.
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