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I can provide good answers to questions dealing in almost all of mathematics especially from A`Level downwards. I can as well help a good deal in Physics with most emphasis directed towards mechanics.
An engineering graduate. I have been doing maths and physics all my life.
| User | Date | K | C | T | P | Comments |
|---|---|---|---|---|---|---|
| katharine | 11/06/09 | 10 | 9 | 8 | 10 | ok, thank you so much!! i understand ..... |
| katharine | 11/06/09 | 10 | 9 | 8 | 10 | ok, thank you so much!! |
| Cindy | 11/03/09 | 10 | 10 | 10 | 10 | Thank you! Cindy |
| Cindy | 10/30/09 | 10 | 10 | 10 | 10 | Thank you, so much! |
| Asad | 10/27/09 | 10 | 10 | 10 | 10 | Okay. Radical is the sign and (x-1) ..... |
Hi Katharine, 27^x² > 9^x³ (3^3)^x² > (3^2)^x³ 3^(3x²) > 3^(2x³) Now, 3x² > 2x³ 3x² - 2x³ > 0 x²(3x - 2) > 0 Notice here that x² is always positive and so the sign of x²(3x - 2) only depends on
Hi Cindy, Re-arranging the equation by completing the square in y, 9x² + y² + 10y + 16 = 0 9x² + (y² + 10y + 25) - 25 + 16 = 0 9x² + (y² + 10y + 25) = 9 9x² + (y+5)² = 9 x² + (y+5)²/3² = 1 Now,
Hi Steve, To get the half-life you simply use the equation N = No.e^(-αt) If T is the half-life, then t = T when N = No/2, i.e No/2 = No.e^(-αT) 1/2 = e^(-αT) Taking the natural logarithms
Hi Jill, d)First, you need to remember the basic identities sin²x + cos²x = 1 sin(x+y) = sinx.cosy + siny.cosx and when x = y sin(x+x) = sinx.cosx + sinx.cosx sin2x = 2sinx.cosx Now, sin(x + π
Hi Stephen, Well, the new table of values is just one that contains values of lnN and Time t(just as before). In case you're wondering, lnN refers to the natural logarithm of N and you can get all the
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