Recent content by ivan_x3000

So... what did you did think of my answer haha 0.5*0.35

I went with hyper geometric aiming to use up 9 red and 3 green, living 4 of each.

Actually nah new idea... use a tree diagram and it's a 0.5*0.35

Homework Statement Of all archers at one particular competition 50% are local (1/2) 40% come from another state (2/5) 10% are international (1/10) At the end of the competition some of the archers choose to go on a specially organised bus tour Of the locals 35% go on the tour...

How about S={0.57, 0.036, 0.912}

how about now?

a) Let a=RSI, b=eye strain, a'c'=a^c*a^c=neither P(a)=0.057, P(b)=0.036, P(a'b')=0.912 b) S[0.57, 0.036, 0.912] c) (0.057)*(0.036)=0.002052 d) The values are statistically independent, in oder to to be statistically dependent at least one of the outcomes must have an effect on the other this...

Homework Statement (a) At the start of the competition, Shirley has 20 arrows in her quiver (a quiver is a container which holds arrows). 13 of Shirley’s arrows have red feathers, and 7 have green feathers. Arrows are not replaced when they are shot at the target. (i) At the end of the...

Homework Statement Each year, 5.7% of archers develop repetitive strain injury (RSI) in their arm. Each year, 3.6% of archers develop problems related to eye strain. However, 91.2% of archers develop neither. (a) Formally define sensible event notation, and summarise the information in the...

Homework Statement use trig identities to show that (b) cos(tan^(−1)[x])=1/√(1+x^2) for −1/2π<x<1/2π. Homework Equations i think Pythagoras has to applied but that is geometric reasoning hmm The Attempt at a Solution

Thank you so much that is a great hint haha

Sorry it is (u+iv)^-3 my bad

Yes definitely a type it was meant to be (u+iv)^3

Homework Statement Suppose that u and v are real numbers for which u + iv has modulus 3. Express the imaginary part of (u + iv)^−3 in terms of a polynomial in v.Homework Equations The Attempt at a Solution |u+iv|=3 then sort(u^2+i^2) = 3 then u = 3 and v=0 or u=0 and v=3(0+3i)^-3 i swear i am...

Wait how come? I'm trying to do the part where i have to show how the assumption is through for polynomials in the complex plane