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  1. Lucas_

    Difficult 2u integration of exponentials - HELP please

    Hey, I have been asked: <a href="http://www.codecogs.com/eqnedit.php?latex=Find \int x^2 e^{x}^{3-1} dx" target="_blank"><img src="http://latex.codecogs.com/gif.latex?Find \int x^2 e^{x}^{3-1} dx" title="Find \int x^2 e^{x}^{3-1} dx" /></a> That x is raised again to (3-1). So x^2 e^x^3-1. I...
  2. Lucas_

    Area between two curves with hyperbola - HELP please

    Thanks to both bashby and Carrotsticks. I now understand. Can somebody please neg that Barbernator fellow?
  3. Lucas_

    Area between two curves with hyperbola - HELP please

    I don't fully understand bashby, please explain? I did draw them, but the line y=x means that I can integrate from 0 doesn't it? Here, look:
  4. Lucas_

    Area between two curves with hyperbola - HELP please

    Hey, So the question is: I keep getting my answer as Ln(2)- 4 units2. Answer says Ln(2) + 0.5 units2. I don't get what I am doing wrong. Isn't the area between curves the integral between 0 and 2 of top curve - bottem curve? How do you even know which curve is top or bottem? Thanks as always
  5. Lucas_

    Atar Estimate

    Hi The way your marks are going now, you could be looking at mid to high 80's. If you could manage to push your English rank up to top 10 you could MAYBE be looking to scrape into the 90's ATAR band. Goodluck with your studies. PS: I've heard ACU is a fantastic uni
  6. Lucas_

    <=========================3 When you get lonely you can have a fap to this xo

    <=========================3 When you get lonely you can have a fap to this xo
  7. Lucas_

    Going to the movies by yourself

    Going to the movies by yourself is weird
  8. Lucas_

    Question regarding point charge and charged metal plate? - Multi choice

    Hi I have 2 questions from my weekend homework that I am struggling with. I think the answer is either C or A. If I had to pick I would say C since the charge is attracted to the plate and field lines go from positive to negative. I think the answer is either C or D. If I had to pick I...
  9. Lucas_

    Differentiation/Intergration using exponential - Sorry to spam questions

    Repped RealiseNothing for a great response :) Can anybody be more clear on the first question? Does 'hence determine' mean solve the integral or just prove that it is the correct integral by differentiating the above equation?
  10. Lucas_

    2U Probability Question

    Anytime mate :)
  11. Lucas_

    2U Probability Question

    a) Neither prize requires both unfavorable outcomes. Ie chance of no prize x no prize again 5/30 = chance of winning, or 25/30 chance of not winning. So 5/6 x 24/29 (1 ticket already drawn so 29 possible tickets left) = 20/29 chance of winning neither prize or 69% b) Both prizes requires both...
  12. Lucas_

    Differentiation/Intergration using exponential - Sorry to spam questions

    Hi guys, From my assigned work I have had two problem questions, I proved that x^3e^x differentiated, was indeed the above integral. I'm not sure if the wording just wanted me to prove it or if it wanted me to solve the integral as well. What does 'determine' mean in a mathematical...
  13. Lucas_

    Significant Figures - Yes im a retard - please help?

    Hi Yes, you may think I'm a blockhead but I have never fully understood this simple concept. Does anybody wana have a shot using examples? Thanks + rep :) :tennisclap:
  14. Lucas_

    Maths question

    Barbenator wins , thanks
  15. Lucas_

    Maths question

    Hi, need help Find the stationary point on the curve y = e^x and determine its nature. Find any points of inflexion and find values of y as x becomes very large or small. Hence sketch the curve. I got as far as working out the stat point's co-ordinates and then what y'' is but now im stumped...
  16. Lucas_

    Strong/Weak acids and bases

    Thank you all for your responses
  17. Lucas_

    Strong/Weak acids and bases

    When asked if an acid is a strong or weak is there a way we can "determine" this or do we just have to memorise which are which? Example: 1. Classify the following as strong acids or weak acids: a) HCL b) H2CO3 c) H2SO4 d) H3PO4 e) CH3COOH 2. Classify the following as strong or weak bases: a)...
  18. Lucas_

    Anyone else off to Japan?

    This man has the right idea
  19. Lucas_

    Anyone else off to Japan?

    who goes to japan for schoolies when you can pay alot less and get equally as hammered at byron?
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