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Why should you learn this if it will never be in the 2U exams?

Nope.

I apologise, I thought 6 minutes was 600 seconds Correction: When t=300 T = -10 + 24e^-(ln(7/8)/-25)(300) = -5.166 degrees

Assume Newton's Law of Cooling, T = B + (A-B)e^-kt where T is in degrees, B and A are constants and t is in seconds. Initially 14 means A=14 Constant temperature is -10 so B=-10 So T = -10 + 24e^-kt when t=25, T=11, solve for k, 11 = -10 + 24e^-k(25) e^-k(25) = 21/24 k=ln(7/8)/-25 a) When...

After 2008 Medical Physics has been the 2nd most popular and selective schools like Hurlstone do it as well. Also astrophysics is the worst thing ever yo learn anyway, piece of ****!!

You're brother's being humble about his atar. Seriously, I think you're brother meant 98.95 or something.

Firstly, the y values of the line and curve will intercept. y = mx = e^3x. Now the gradients of the line and the tangent will intercept, m = 3e^3x. Combine the two equations, m = 3mx, x = 1/3. Therefore since mx = e^3x, now when x = 1/3, m(1/3) =e^3(1/3) m/3 = e^1 m = 3e

Re: The Superannation Thread Wtf is insurance premiums and contribution tax? My poor $25 gone :(

Haha just reminiscing, still remembered wehn UMAT killed my maths since it was the day before maths :P

CSSA?

What happened to extension 2 mathematics?

Yes the 1 unit will count. If you're good at English, I see no harm pursuing Ext 1 English.

Since you already will complete 3 units of preliminary subjects, 2u and ext 1, you only require to do 9 units for yr 11. So yes it will count. Your subject choice is fine and 95% of asians have the same subject combo.

For n = 2, LHS = 400 - 25 = 375 RHS = 225 LHS < RHS n = k 20^k - 5^k > 15^k Prove true n = k + 1 20^k+1 - 5^k+1 > 15^k+1 LHS = 20(20^k) - 5(5^k) > 20[15^k + 5^k] - 5(5^k) = (5+15)(15^k) + 15(5^k) = 15(15^k) + 5(15^k) + 15(5^k) > 15^k+1

First graph the two functions to see which one is the top and bottom function and also the point of intersection. In this, the point of intersections are 1 and 1, by solving for x and in this region, the first function is above the second function. So solve a definite integral between -1 and 1...

Re: Looking for notes in English Standard | General Maths | PDHPE | Studies of Religo Have you looked at the resources page? For example, http://www.boredofstudies.org/view.php?course=4 for general maths

Re: HSC 2015 3U Marathon We learnt this method for 3U. It wasn't hard, kinda more interesting but was a waste of time considering the HSC exams only use differentiation and actually provide the equation in a sense

Agreed, the exam may have been hard possibly, don't give up, got 30s in my prelim 3u exam and still ended up with High Band 6 for HSC.

<95

School rank has nothing to do with the ATAR. Otherwise there would be no hope for the bottom ranked schools which is not true.