Posts by Kerry-Ann

Total # Posts: 44

  1. Pure Mathematics

    In=∫ x^nSinx dx....with the limits π/2 and 0 i found that In would be equal to n(π/2)^(n-1) -n(n-1) In-2 how do i deduce the value of I4? where n=4

    Explain to me just this one line 1+z = 2 cos(θ/2)(cos(θ/2) + i sin(θ/2))what happened to i sin(θ/2)) in the other two lines which follow?

    thanks very much for helping with 1 and 9 number 8 is still giving me some trouble though

    so number 8 is has trigonometry identities in it?

    for the first one I got a to be -0.67 and 1.5 when b is 9 and -4, respectively

    1. The complex number 'a' is such that a^2=5-12i use an algebraic method to find the two possible values of 'a' 8. The complex number z is given by z=cosTheta + isinTheta where -1/2pi< or equal to Theta less than or equal to 1/2pi. a. show that |1+z|=2cos(1/...
  7. Pure Mathematics

    number one is supposed to be -6<c<6 number two is supposed to be c>5 and number three is supposed to be k=8
  8. Pure Mathematics

    1. Given that the straight line y=c-3x does not intersect the curve xy=3, find the range of values for c. 2. Find the range of values for c for which the line y=cx+6 does not meet the curve 2x^2-xy=3. 3. Find the range of values for k for which 8y=x+2k is a tangent to the ...
  9. Mathematics

    what is (5 3/5 divided by 1 5/9) - (1 1/5) squared? what is (five and three over five divided by one and five over nine) minus (one and one over five) squared? the answer is suppose to be 2 4/25 (two and four over twenty-five) but I'm not sure how to work out the second ...
  10. Geography

    (In school the topic I'm now doing is TOURISM.) 1) In tourism, what does long stay and group travel mean? 2)What is the Jamaica Tourist Board and how does it helptourism? 3) What is the 'Meet the People Programme' and how does it help tourism?
  11. Geography

    thank you very much, your a big help.
  12. Information Technology

    Apeart from the computer, what three electronic devices contain a chip and what nfunction does it play in that specific device? Can a remote, phone and the T.V. be examples? but what function does it play in these devices?
  13. Home Economics- Clothing and Textiles

    what are 5 reasons for disposal of fullness on garments?
  14. Home Economics(sewing)

    1)what does the term "disposal of fullness" mean? 2)What are 4 methods of controlling fullness and how is that method done? 3)What are 5 reasons why people dispose of fullness? 4)CAN YOU SEND ME THE NAME OF A WEBSITE(S) THAT HAS PICTURES OF GARMENTS SHOWING THE ...
  15. Geography

    What are the namesz of insects that live on cattle?
  16. Languages

    many thanx chopsticks :)
  17. Languages

    How do you say, Happy Valentines Day in Spanish and in French?
  18. English Language

    What does it mean to be 'scrupulously fair?'

    What are some problems children face at school and in general as students
  20. Information Technology

    Explain the following: 1)Video Graphic Card 2)Output of Sound
  21. History

    Since the time of the Portuguese sailors of the 15th century man has developed many new ways of traveling. What are these new ways and when were they developed?
  22. History

    Since the time of the Portuguese sailors of the 15th century man has developed many new ways of communicating, what are they and in when were these new methods developed?
  23. french

    Could you please post it to me in French if not you can post the English it doesn't really matter.
  24. french

    1) What is the translation for the french celebration, Le jour de l'an? 2) What is the date of the celebration? 3) What is done during the celebration?
  25. art

    renaissance means rediscovey or rebirth of knowledge
  26. 7th grade

    -2y-5=9 -2y=9+5 -2y/2=14/2 2 into -2y=1 2 into 14=7 answer = 7
  27. Mathematics

    12.07 divided by 0.00897 giving the answer correct to 3 significant figures.
  28. History

    Thank you very much Ms. Sue!!! :-)
  29. History

    What is the name of a famous Arawak chief and what was the name of the Arawak's read dye?
  30. Science

    (FOR PLANTS) What is chemical reaction and how do plants use it?
  31. Physical Education

    What are the measurements of field hockey stick and ball? What are the names of 4 International hockey Players? What is IFWHF and FIH? What are Social, Mental and Physical Well-being? Describe Endomorph,Ectomorph and Mesomorph What is Health?
  32. sewing

  33. sewing


    How does Information Technology affect skills?
  35. Tnformation Technology

    Give two ways in which Informayion Technology has affected the following areas: a)health b)job c)skills d)Lifestyle(entrtainment,home,shopping)
  36. Library Science

    What are 8 different types of information commonly found on a card catalogue?
  37. math

    What is -4m squared times -5m cube
  38. Science

    What is pressure? as in one of the things the skin responds to as a type of sence
  39. math

    What is -4m squared times -5m cube is it 20m5 or 10 m5
  40. Science

    What is pressure? as in one of thethings the skin responds to.
  41. Social Studies

    Why is it important for us to learn Social Studies?
  42. math

    yes i mean m squared
  43. math

    what is 18m2+12m2+23m2
  44. Social Studies

    what are some ways in which we learn Social Studies?