Points E and F are two points of diagonal BD of parallelogram ABCD, be = DF, find vector BC vector AE

Vector BC vector AE = vector Ad vector AE = vector ed

RELATED INFORMATIONS

1. Know the length of the three middle lines of the triangle and find the area of the triangle Given that the lengths of the three middle lines of a triangle are 3, 4 and 5, calculate the area of the triangle How to prove that the area of triangle ABC is equal to the area of six triangle BOD?
2. If the side length of regular triangle ABC is a, PA ⊥ plane ABC, PA = AB, then the distance from a to plane PBC is
3. If the distance between point (4, a) and line 4x-3y-1 = 0 is not greater than 3, then the value range of a is () A. [0，10]B. [13，313]C. （0，10）D. （-∞，0]∪[10，+∞）
4. The fifth power of polynomial ax + the third power of BX + (X-5) when x = 3, the value is equal to 7. When x = - 3, find the value of this polynomial fast The process is detailed ah
5. To solve the inequality system: 5 ≤ 2x + 3 ≤ 7
6. Find the unknown x.1,3.2 * 2.5-75% x = 2.2,5x-5 * 1 / 3 = 0.8
7. Using substitution method to solve: 4x + 3Y = 5, x-2y = 4 Thank you
8. The solution of one variable linear equation 2 (x-1) = 1 / 3 (4x-3) is?
9. Factorization; x2 [X-Y] + Y2 [X-Y] 2 is the square
10. If we know that 4f (x) + 3f (1 / x) = x, then the analytic expression of F (x) is that the solution of this problem 4f (x) + 3f (1 / x) = X Change x to 1 / X to get 4f(1/x)+3f(x)=1/x Two types of simultaneous Why change x to 1 / x? I haven't seen this kind of problem-solving method. The answers are good. I can only draw lots.
11. In the triangular pyramid s-abc, if SA is vertical to BC, SA = BC = a, SA is vertical to de, BC is vertical to de, and de = B, the volume of the triangular pyramid s-abc is obtained
12. Given vector p1p = - 1 / 3, vector p1p2, vector PP2 = a, vector PP1, then a = - (seeking process) urgent!
13. In the parallelogram ABCD, e and F are the middle points of the edges AB and CD respectively, BD is the diagonal, and Ag / / DB is made through point a, and CB is crossed It is proved that the quadrilateral debf is rhombic if ∠ g = 90 ° at point G
14. If OA, OC is the radius of ⊙ o, and OA ⊥ OC, point D is on arc AC, Ao = 1, arc ad = 2, arc CD, and point P is a moving point on OC, then the minimum value of AP + PD is
15. Verify Goldbach's conjecture with VB: a large even number can be decomposed into the sum of two prime numbers Verify Goldbach's conjecture A large even number can be decomposed into the sum of two primes Try to write all even numbers between 500 and 1000 as the sum of two prime numbers ---
16. Given x > 0, Y > 0, xy = 1000, find the value range of lgx times lgY
17. The positive roots of the equation x + TaNx = 0 are arranged as A1, A2, A3,..., an from small to large 1 0
18. When 0.39:78, 4 cm:20 km, 5:3:25:27, 24:0.2, simplify the comparison and calculate the ratio
19. If the left side of the equation is divided by 2 and the right side is multiplied by 0.5, the left and right sides of the equation are still equal In three minutes
20. How to divide 19.8 by 3.3?