![](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 that vector a = (2, x), vector b = (3, 4), and the angle between vector a and vector B is obtuse, then the value range of X is___ A.x>-2/3 B. X > - 2 / 3 and X ≠ 8 / 3 C. X2 / 3 and X ≠ 8 / 3
The included angle is obtuse
Vector a * vector b = negative
2*3 +4x
RELATED INFORMATIONS
- 1. Given the vector a = (a, 2), B = (- 3, 5), and the angle between vector a and vector B is obtuse angle, the value range of a is obtained Given the vector a = (in, - 2), B = (- 3,5), and the angle between a and B is obtuse, then the value range of in
- 2. Given the vector a = (E, 2), B = (- 3, 5), and the angle between a and B is obtuse, what is the value range of E,
- 3. The function of vector in Physics
- 4. How to transform rectangular coordinate velocity into polar coordinate velocity In a three-dimensional velocity field, it is necessary to decompose the velocity on a circular surface into radial velocity and tangential velocity We know how to use the dot product of vector to get the radial velocity, but we don't know how to get the tangential velocity. Because velocity has direction, we can't simply use Pythagorean theorem to get the tangential velocity Can you explain in detail how to find the tangent vector of the next derivative
- 5. The teacher made a strict criticism on me and changed the wrong sentence
- 6. Matrix A = first line 4 1, second line 1 4 1, third line 1 1 4 1. Find the orthogonal matrix C so that C ^ TAC is diagonal 2. Write the quadratic form f corresponding to a 3. Write the standard form of F
- 7. Question: some students of grade 6 go boating. If 5 people sit on each boat, 14 people have no boat to take. If 7 people sit on each boat, one boat can take 4 people How many students go boating in sixth grade?
- 8. When k is a value, the function f (x) has continuity in its domain f（x）=sinx/x x=0
- 9. How to say this in English
- 10. X / 1 * 2 + X / 2 * 3 + X / 3 * 4 +... + X / 99 * 100 = 1 Is the final x = 100 / 99
- 11. Given that a = (x, 2), B = (- 3, 5), and the angle between a and B is obtuse, then the value range of X is? Letter A. B is vector!
- 12. Given the vectors a = (x, 2) and B = (- 3, - 5), the angle between a and B is obtuse angle, find the value range of X
- 13. Vector a (m, 2m), vector b (- - 3M, 2) if the angle between vector a and vector B is an obtuse angle, how can we solve the problem of the value range of M?
- 14. If the angle between vector a = (3, m, 4) and B = (- 2, 2, m) is obtuse, then the value range of M, please write the detailed process, the answer is m
- 15. If a = (1,2), B = (- 1,0), C = (4,6) are given, and a and B are used to represent C, what is C
- 16. Vector a = (3, - 2), B = (- 2,1), C = (7, - 4) try a, B means C is vector!
- 17. Given the vector a = (5,10), B = (- 3, - 4), C = (5,0), let's use a and B to express the vector C
- 18. Given the vector a = (3, - 2) B = (- 2, - 1), C = (7, - 4), and C = λ a + μ B, what are the values of λ and μ
- 19. Given vector M = (2cos & # 178; X, √ 3) n = (1, sin2x) function f (x) = m * n (2) In the triangle ABC, ABC is the opposite side of the angle ABC and f (c) = 3, C = 1 and a > b > C respectively
- 20. We know the vector M = (2sinx / 2, - root 3), n = (1-2sin & # 178; X / 4, cosx), where x belongs to R 1. If M is perpendicular to N, find the set of values of X 2. If f (x) = m * n-2t, when x belongs to [0, π], the function f (x) has two zeros, and the value range of real number T is obtained