Recent content by coyazayo

Lol I don't even understand what the teacher is saying ;p maybe I should talk to her about how its way past our syllabus huh?

Hey guys I have year 10 yearlies soon and one of the topic is inverse function. However I am confused in regards to restricting a domain such that inverse f(x) exists. For example when y=x^3-3x is restricted and must include zero, the answer states the domain as -1<x<1 (which excludes the...

Hi every1 thnx in advance ;) 1.Evaluate the limit lim x->∞ (xtan(2/x)) 2. Use L'Hopital rule to evaluate the following lim x->∞ (-x^2/e^x)

Hey everyone! Thanks in advance :) 1. f(x)=x^3-3x Find the gradient of the tangent to the curve y=f-1(x) at the point (-11/8,1/2) 2. Let g(x)=e^x-1/e^x Find an expression for y=f-1(x) in terms of x

Hi everyone! Find dy/dx 1. xy-2=0 2.x/y+4x=1 3.x^2y^3+xy^2-8=0

Hi all! I have some questions on inequality i need help with. Thanks in advance :) Graph the regions: 1. |xy|Greater than or equal to 1 (is x=0 included or excluded in this case?) 2.1/x>1/y It would be appreciated if you showed working out as well :p

Pat borrows $30 000 at 9% per annum reducible interest, calculated monthly. The loan is to be repaid in 60 equal monthly instalments. Q. With the twelfth repayment, Pat pays an additional $5000,so this payment is $5622.75. After this, repayments continue at $622.75 per month. How many more...

You are at Risser's beach to search for interesting shells. At 12pm on 19th June, the tide is in (i.e the water is at its deepest.) At that time you find that the depth of the water at the end of the breakwater is 15m. At 8pm the same day when the tide is out, you find that the depth of the...

Find the exact value of tan22.5 degrees by using the expression for tan2x Thanks in advance :)

Hi. Evaluate the general solution of following trigonometric equations. sin(3x-pi/4)+cos(x+pi/3)=0

Hi it's been a while since I posted anything since I've been studying for other subjects. I need help with Exercise 4B Q9 and Q10 on year 11 cambridge 3U Thanks in advance :)

Yeah but there are situations where individuals muck up in one of the school exams and hence get don't get the grading they want for their report :p Additionally, some schools mark more lenient where others are more strict. I guess that could also affect your grading :p

Haiya everyone. This question is addressed to those who sat the ruse test or knows anything about it. So how exactly was the test? What comprised the test and if you could, elaborate on the time given and the difficulty? Thanks in advance :p

Hi everyone :) Q1. Write down an equivalent expression consisting of one term for each of the following A. (1-tan^2(θ/2))/(1+tan^2(θ/2)) B. (1-cos4θ)/(1+cos4θ) Q2. Prove that (without using half-angle formula) cos22.5= \frac{\sqrt{2+\sqrt{2}}}{2} So irritating to write some of these...

Hello everyone and thanks in advance :0 Q. (24y+36)x^2 +(24y+36)x +6y +25=0 Express in the form of y=a/(x-h)^2 +k (Truncus)