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在理工科中，Formula, Equation 和 Function 这三个词有什么异同？ - 知乎 equation：等式，方程式 英英释义： An assertion that two expressions are equal, expressed by writing the two expressions separated by an equal sign; from which one is to determine a particular quantity
linear algebra - Equation of a plane passing through 3 points . . . In fact, it’s possible to do better and write down an equation of the plane directly Every other point (x, y, z) (x, y, z) on the plane also generates a linear equation in the coefficients of the plane equation
What is the difference between equation and formula? An equation is meant to be solved, that is, there are some unknowns A formula is meant to be evaluated, that is, you replace all variables in it with values and get the value of the formula Your example is a formula for mpg But it can become an equation if mpg and one of the other value is given and the remaining value is sought
simple geometry question- equation of cylinder All points on it have x=0 and y=0 Clearly it is a line with any z-allowed You could write the equation of the axis as x2 +y2 = 0 x 2 + y 2 = 0, because in the reals the only solution to this equation is x = 0 x = 0 and y = 0 y = 0 This shows you that the z-axis is like an infinitely thin cylinder (with a point cross section 0 radius)
Difference between ≈, ≃, and ≅ - Mathematics Stack Exchange In mathematical notation, what are the usage differences between the various approximately-equal signs "≈", "≃", and "≅"? The Unicode standard lists all of them inside the Mathematical Operators B
Heat equation - solving with Laplace transform For each fixed s s this is a constant-coefficient second-order linear ODE in x x The general solution is given by the sum of the general solution to the homogeneous equation and any particular solution to the inhomogeneous equation There shouldn't be a need to consider s <0 s <0, as the Laplace variable is usually assumed > 0> 0 by definition
Find the Vector Equation of a line perpendicular to the plane. Question: Find the vector equation r(t) r (t) for the line through the point P = (−1, −5, 2) P = (1, 5, 2) that is perpendicular to the plane 1x − 5y + 1z = 1 1 x 5 y + 1 z = 1 Use t t as your variable, t = 0 t = 0 should correspond to P P, and the velocity vector of the line should be the same as the standard normal vector of the plane This one is really giving me a hard time I know