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If α 1, α 2 For any group of numbers K1, K2 ks, There are K1 α 1 + K2 α 2 + Why is KS α s = 0 wrong
Not for any group, there must be a group
Conductor consumption (kg / km) = D ^ 2 * 0.7854 * g * n * K1 * K2 * C
^It means power
RELATED INFORMATIONS
- 1. (kg / km) = D ^ 2 * 0.7854 * g * n * K1 * K2 * C / what does 2 after diameter power mean
- 2. If the intersection of the line y = K1X + B1 and the line y = k2x + B2 is on the x-axis, then a K1 = K2, B B1 = B2, C k1b2 = K2, D K1 + B1 = K2 + B2
- 3. If there is a definition: int a, B;, through the statement scanf (% d;% d ", & A, & B);, the integer 3 can be assigned to the input data of variable a, and the integer 5 can be assigned to the input data of variable B It's (c) A． 35 B． 3,5 C． 3；5 D． 35 Why don't b commas correspond?
- 4. Why is the slope tangent to the tilt angle Today, I learned that the coefficient of the linear equation directly affects the inclination angle of the line in the coordinates, and then the coefficient can be calculated through the tangent of the inclination angle. Well, it can be calculated in this way, but why? What's the principle? Please tell me in detail. Thank you
- 5. Through the point (- 2,1), the tangent of the tilt angle is half of the linear equation
- 6. How to calculate the slope of a straight line with an angle of 48 ° with the x-axis? I only know that the tutor of x-axis is 48 degrees,
- 7. What is the linear equation that passes through point a (1,2) and has a slope of half?
- 8. It is known that the direction vector of the line L1 is a = (1,3), and the direction vector of the line L2 is b = (- 1, K). If the line L2 passes through the point (0,5), the direction vector of the line L2 is b = (- 1, K), And L1 is perpendicular to L2?
- 9. The center of the circle q is on the positive half axis of X, the line l1:3x + 4y-8 = 0 is tangent to the circle Q, and the line L2 with the slope k passing through the point P (0,2) intersects the circle Q at two points a and B The radius of the circle is 2 The equation for finding circle Q Finding the value range of real number k Is there a constant k such that the vector OA + ob is collinear with PQ? If there is a constant K, there is no reason
- 10. The line L1: y = (K / 3-2k) × (x + 2) passing through the point (- 1,1) with a slope of 3 / K + 2 is parallel 2 and the line L: mx-m & # 178; y = 1, which is perpendicular to the point P (2,1), the equation is?
- 11. -1=k1+k2 5=3k1+k2/3
- 12. It is known that H2CO3 K1 = 4.3 * 10 ^ - 7, K2 = 5.6 * 10 ^ - 11
- 13. If the chemical equilibrium constants of the reaction at 298k398k are k1k2 and the reaction is ammonia synthesis from nitrogen and hydrogen, K1 is greater than K2 Isn't the chemical equilibrium constant only related to temperature
- 14. Example: A1 * B1 = C1 & D1 & E1 & F1 & G1 & H1 & I1 & J1 & K1 & L1 = $234567 The number of digits of the calculation results of the two cells is variable, which is arranged from one digit to ten million digits respectively, with a limit of 10 digits. A currency symbol is displayed in the cell before the highest digit, and no significant number in front of the currency symbol is displayed as a space
- 15. There are two conclusions when linear equations are perpendicular to each other. One is K1 * K2 = - 1. What is the other?
- 16. If two linear functions y = K1 + B1 and y = K2 + B2 intersect at the same point on the Y axis, then for the conclusion: ① K1 = K2; ② B1 = B2 One of them must be true Neither a, B, C, nor D
- 17. If the slope of a straight line is Tana, then its inclination angle is a
- 18. Know the general equation of straight line, how to find the inclination angle and slope?
- 19. How to find the slope of a straight line when the general equation of a straight line is known
- 20. It is known that the point oblique equation of line L is Y-2 = X-1, then the slope of line L is -? And the inclination angle is?