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PI represents () A. Ratio of circumference to diameter B. Ratio of circumference to radius of a circle C. Ratio of diameter to circumference D. Ratio of radius to circumference
From the meaning of PI, PI represents the ratio of circumference to diameter of a circle;
Therefore, a
PI represents the quotient of ()
0
How to calculate the PI and how to calculate it
Archimedes used the positive 96 polygon to get the precision of 3 decimal places of PI. Liu Hui got 5-digit precision with 3072 polygon. Ludolph van ceulen got the accuracy of the circle with 262 polygon
How to calculate the PI
3.1415926535897932384626 the ancients generally used the method of cutting circle to calculate the circumference of a circle. Archimedes used the regular polygon of the circle to approximate the circumference of the circle. Archimedes used the regular 96 polygon to get the accuracy of 3 decimal places of the PI; Liu Hui used the regular 3072 polygon to get the 5-digit accuracy; ludolph van ceulen obtained the 35 bit accuracy with the positive 262 polygon, With the development of mathematics, mathematicians have found many formulas to calculate pi
How many digits of PI are there? How many are calculated at present?
No digits
How is the PI calculated? In addition, what is the reinforcement density?
In order to get a better approximation of PI, generations of mathematicians have devoted themselves to this mysterious number. Before the 19th century, the calculation of PI was very slow. After the 19th century, the calculation of PI was very slow
PI represents the number of a circle and the number of times
Perimeter diameter
Judgment: Pi represents the multiple relationship between radius and perimeter, which is represented by the letter π 2. If the number of a is 25% more than that of B, then number a and number B are 1, 2, 2, 3, and out of proportion
The PI should be a multiple of the circumference and diameter of a circle
2 is in direct proportion
PI represents the same circle______ And______ Multiple relation of
PI is the relationship between the circumference and diameter of a circle
So the answer is: circumference, diameter
PI represents the same circle______ And______ Multiple relation of
PI is the relationship between the circumference and diameter of a circle
So the answer is: circumference, diameter
RELATED INFORMATIONS
- 1. PI represents the multiple relationship of circle () and () with two decimal places reserved Yes, I'll take it. I'll add another 50
- 2. Let y = f (x) be a decreasing function if θ∈ [0, π] 2] When f (COS 2 θ + 2msin θ) + F (- 2m-2) > 0 is constant, find the value range of M
- 3. If the vector PQ = (4 / 3, - 2 / 3) Vector op × vector OQ=
- 4. Vector M = (2sinx, 1), n = (√ 3cosx, 2cos2x), function f (x) = mn-t. (1) if the equation f (x) = 0 has a solution on 0 < = x < = π / 2, find the range of T value; (2) In the triangle ABC, ABC is the opposite side of ABC respectively. When t in (1) is the maximum value and f (a) = - 1, B + C = 2, the minimum value of a is obtained
- 5. It is known that f (x) = (x ^ 2-5) / 2x, f (3 + 2Sin θ)
- 6. We know that the opposite sides of the inner angles a, B and C in the acute angle △ ABC are a, B, C, vector M = (2sinb, root 3), vector n = (2cos ^ 2B / 2-1, cos2b), and m ⊥ n, (1) find the size of B, (2) if B = 2, find the maximum area of △ ABC
- 7. An axis of symmetry of the image of the function y = sin (3x + π × 3 / 4)... Attention!
- 8. The function f (x) = sin ^ 2wx + √ 3 * coswx * cos (π / 2-wx) (W > 0) is known, and the distance between two adjacent symmetry axes of the image with function y = f (x) is π / 2 (1) Find the symmetry center of the image of function y = f (x) (2) When x ∈ [0, π / 2] and f (x) = a has a real number solution, the value range of real number a is obtained
- 9. Given a vector a = (2coswx, 1), B = (Radix 3sinwx coswx, n), where x ∈ R, w > 0, the function f (x) = a * B (x ∈ R), if the minimum positive period of F (x) is π., the maximum value is 3 (1) Find the maximum value of function f (x) on X ∈ [0, π / 2] (2) The three angles of △ ABC correspond to three sides of a, B, C, and satisfy f (a) = 2, a = 1, B + C = radical 3 + 1, and calculate the area of △ ABC
- 10. The symmetry axis of function y = 1 / 2Sin (x - π / 3)
- 11. -Is π (PI) a negative number? (now I'm confused, the teacher gives an answer and analyzes the last answer, two on the Internet.),
- 12. PI (accurate to 50 bits)
- 13. What is Pi? Which mathematician calculated the value of PI between 3.1415926 and 3.1415927 Write two quantitative relationships based on 55 percent of the total amount of fertilizer that has been transported away It takes 20 days for a project to be completed by team a and 12 days for team B to do it alone. How many days does it take for the two teams to work together
- 14. Pi = perimeter / diameter,
- 15. Is the value of PI circular?
- 16. The known function f (x) = cos ^ 4-2sinxcosx-sinx ^ 4 (1) Write the monotone increasing interval of function f (x) (2) Find the equation 2F (x) + √ 3 = 0
- 17. 0
- 18. The monotone decreasing interval of the function y = sin (x + 4 / π) is a monotone increasing interval
- 19. The function y = cos (2x - π) 3) The monotone decreasing interval of is___ .
- 20. Given the function f (x) = (1 + 2sinxcosx) / SiNx + cosx, find the minimum positive period and maximum value of F (x)