![](data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" viewBox="0 0 72 71" width="72"></svg>)
Given the plane vector OP=λOA OB, R, then the necessary and sufficient conditions for the colline if and only if If the plane vector OP=λOA OB, R, then P, A, B are collinear if and only if
Three-point colline OB and =1, then A, B and C are collinear
If OC=λOA OB and =1, then A, B and C are collinear
Given three points O, A, B on a plane that are not collinear, if the vector OP =αOA +βOB (α,β belongs to R) and α+β=1, then What is the position of point P? State reasons OP, OA, OB are vectors
Let β=t, then α=1-t
So OP=(1-t) OA+tOB
=OA-tOA+tOB
=OA+t (OB-OA)
So OP-OA=t (OB-OA)
So AP=tAB
So A, B, P are collinear.
Let vectors OA and OB be non-collinear, point P be in the plane of O, A and B, and OP=(1-t) OA+tOB (t∈R) prove that the three points A, B and P are collinear. No two or three sentences. Thanks. Let vectors OA and OB be non-collinear, point P be in the plane of O, A and B, and OP=(1-t) OA+tOB (t∈R) prove that the three points A, B and P are collinear. No two or three sentences. Xie.
CERTIFICATE:
Because: OP=(1-t) OA+tOB, expand to:
OP=OA-tOA+tOB
I.e. OP-OA=t (OB-OA)
Because: AP=OP-OA, AB=OB-OA
Therefore: AP=tAB
So: A, P and B are collinear
If a, b are two non-zero vectors, then a+b is equal to a-b is a vertical b if and only if?
If a, b are two non-zero vectors, then the module of a+b is equal to the module of a-b is a perpendicular to b.
If a, b are two nonzero vectors, then the module of a+b is equal to the module of a-b.
When the two numbers are added together, Xiao Ming miscalculates and subtracts. The result is 8.6,10.4 less than the correct answer. The larger number in the original number is ______.
(8.6+10.4+8.6)÷2,
=27.6÷2,
=13.8;
A: The larger number was 13.8.
Therefore, the answer is:13.8.
When the two numbers are added together, Xiao Ming miscalculates and subtracts. The result is 8.6,10.4 less than the correct answer. The larger number in the original number is ______.
(8.6+10.4+8.6)÷2,
=27.6÷2,
=13.8;
A: The larger number was 13.8.
Therefore, the answer is:13.8.
RELATED INFORMATIONS
- 1. Of the following physical quantities, the rate of mass D of the AB path C follows the parallelogram rule in addition Of the following physical quantities, the parallelogram rule is followed in addition at the rate of mass D of the AB path C
- 2. Is it possible to use the parallelogram rule if it is difficult to calculate the resultant force of two forces
- 3. The formula for calculating the area of a parallelogram is ______.
- 4. What is the difference between vectors a*b and b*a In this vector problem," if the vectors a and b are not collinear, a*b is not equal to 0. And c=a-[(a*a)/(a*b)] b, the angle between a and c is? "I don't understand the difference between vectors a*b and b*a
- 5. Vector |a|=3,|b|=26,|axb|=72, find |a·b|=
- 6. Explain the "vector product properties" Is the vector multiplied by itself equal to 0 Explain the vector product properties. Is vector multiplied by itself equal to 0
- 7. Is the square of a vector equal to the square of a vector module
- 8. How to judge the direction of two vectors in coordinates? For example, a vector =(-2,-1) B vector =(2,1) Is it just a picture? Thanks for the answer. So what if a =(-1,2) b =(1,6)?
- 9. How to prove vector method to prove the intersection of triangle three-angle bisectors? How to use vector method to prove that the triangle three angle bisectors intersect at one point? How to use vector method to prove the intersection of three angles of a triangle?
- 10. Please help to sort out the vector in high school physics. Please help to sort out the vector in physics.
- 11. Coordinate representation of vectors Two straight lines are respectively x and y, intersect with point O in the same plane,∠xOy=60°, and any point P in the plane is defined as follows with respect to this coordinate system: The two lines are respectively x and y, intersect with point O in the same plane,∠xOy=60°, and any point P in the plane is defined in this coordinate system as follows: if the vector of OP=xe1+ye2(where e1 is the unit vector in the same direction as the x axis and y axis respectively), then the oblique coordinate of point P is (x, y) (1) If the oblique coordinate of point P is (1,-2), find the distance from P to O. (2) If a circle with O as its center and 1 as its radius is an equation in the oblique coordinate system xOy
- 12. What is the resultant force of the three force vector segments if they are connected in order to form a closed triangle
- 13. What is a vector triangle
- 14. Acceleration is vector or scalar, Such as title
- 15. What is a vector? Scalar? Number of generations? For example: displacement is vector, distance is generation, What is a vector? Scalar? Number of generations? For example, displacement is vector, distance is generation,
- 16. What is the difference between a vector and a scalar
- 17. Was the energy a scalar or a vector? Teacher said it was a scalar ~ but why is everyone still talking about positive energy and negative energy? Since it is a scalar, there is no direction. According to everyone, energy is a vector ~ Is energy scalar or vector? The teacher said it was a scalar ~ but why are you still talking about positive energy and negative energy ~ Since it is a scalar, what direction is there?~ According to everyone, energy is a vector ~ or the teacher is wrong ~ Is energy scalar or vector? The teacher said it was a scalar ~ but why is everyone still talking about positive energy and negative energy ~ since it is a scalar, what direction is there?~ According to everyone, energy is a vector ~ or the teacher is wrong ~
- 18. The absolute value of vector a is known to be equal to root number 2, the absolute value of vector b is known to be equal to root number 3, and the angle between vector a and vector b is 45 degrees Find the value range of λ whose angle between a vector b vector and λa vector +b vector is an acute angle. The absolute value of vector a is known to be equal to root number 2, the absolute value of vector b is known to be equal to root number 3, and the angle between vector a and vector b is 45 degrees The the value range of λ whose angle between a vector b vector and λa vector +b vector is an acute angle.
- 19. Set vector groups a1, a2... An is linearly related and a1 is not equal to zero proves that there is a vector ak (2 Don't paste the problem in Baidu, that is not very detailed, anyway I do n' t understand... Let the vector group a1, a2... An is linearly related and a1 is not equal to zero proves that there is a vector ak (2 Don't paste the problem in Baidu, that is not very detailed, anyway I do n' t understand... Let the vector group a1, a2... An is linearly related, and a1 is not equal to zero proves that there is a vector ak (2 Don't paste the problem in Baidu, that is not very detailed, anyway I do n' t understand...
- 20. Vector Expression of Outer Center, Inner Center, Center of Gravity and Vertical Center of Triangle VECTOR EXPRESSIONS OF THE PROPERTIES OF THE OUTER CENTER, INNER CENTER, CENTER OF GRAVITY AND PERPENDICULAR CENTER OF TRIANGLE