直线与平面的交点的计算(Calculating the Intersection of Point for the Line and Plane) 82 0 04:53 App 与棣莫弗定理有关的等式证明(4)(Prove the Identities by De Moirve Theorem) 3618 28 12:16 App 导数的四则运算的推导(the Deduction of Addition and Product and Quotient Rules of Derivativ ...
1 independent inquiry Cooperation and communication After cooperation and exchange Students answer the exchange results Teacher induction, induction, solution step Possible method (1) find the equation between the P and the vertical line Find the intersection of two lines and the coordinates of H Ask...
The unite model of the precision of the point of intersection between a straight line and traffic line is set up.And,based on traffic line like straight line,circle line,and transition curve,precision formulae between a straight line and a traffic line are deduced.These precision formulae are...
The point of intersection can be found with two equations which would be taken into consideration here. a1x+b1y+c1 = 0 and the other formula is a2x+b2y+c2=0. Two parallel lines cannot intersect and hence, the lines can only intersect if they are not parallel. Hence, the common ...
There are two things to see from Equation (3.13): first, the magnitudes of the terms that contribute to the error in the computed intersection point (ox, dx, and thitdx) may be quite different from the magnitude of the intersection point. Thus, there is a danger of catastrophic cancellatio...
We present a formula for the distance between a point and a sphere that is the intersection of two spheres in linear varieties in the Euclidean space. We also obtain formulae for the projection of a point onto the intersection of two spheres in linear varieties as well as for the centre ...
New properties of the intersection numbers on moduli spaces of curves We present certain new properties about the intersection numbers on moduli spaces of curves $\\bar{\\sM}_{g,n}$, including a simple explicit formula of $n$... K Liu,X Hao - 《Mathematical Research Letters》 被引量: ...
THE N-POINT FUNCTIONS FOR INTERSECTION NUMBERS ON MODULI SPACES OF CURVES KEFENG LIU AND HAO XU Abstract. We derive from Witten’s KdV equation a simple formula of the n-point functions for intersection numbers on moduli spaces of curves, generalizing Dijkgraaf’s ...
Define point source. point source synonyms, point source pronunciation, point source translation, English dictionary definition of point source. n. A source, especially of pollution or radiation, occupying a very small area and having a concentrated outp
2.12 and is a point of intersection of that ray path with other neighboring ray paths up to the first degree in the relevant small parameter; (3) a point such as P on a ray path is one at which the eigenvalue associated with the parameter under consideration is zero, while for points...