Mathematics

Can you guys help explain this log question

okay so ive nearly finished this question and i dont understand the last few lines of the solution -t = log(e) 1/4 -t = - log(e) 4 t= log(e) 4 okay so how did it get from 1/4 to 4 and why is there a

Algebra help? Need to refresh my memory..

I need some help refreshing my mind with problem solving. I graduated last year and would love to refresh my mind on solving algebra problems and more, but its kinda foggy for me right now. Can someo

Using inference rules, prove the argument a^ (b→c) ^ [(a^b) →(d ∨¬c)] ^ b →d

please help! ( please try to explain when answering the question) thanks a lot! below is what i tried to do: 1. a 2. (b→c) 3.[(a^b) →(d ∨¬c)] 4. b 5. c (using modus ponens on 2, 4) 6. a^b ( conjunct

Algebra 2 Question Help

f(n)= n^2-n+2, find k if f(n^2+k) = f(n) * f(n+1). Steps would be much appreciate.-If you find a shorter answer then great, but this is what I ended up doing: First, we know that f(n) = n^2 - n + 2

3 math questions algebra 1

9(x + 2) = 3(x - 2) x = 5x + 2 = x - 6 x = -2x - 18 = 6(1 - 2x) + 4x x =-9(x + 2) = 3(x - 2) 9x + 18 = 3x - 6 6x = -24 x = -4 5x + 2 = x - 6 4x = -8 x = -2 -2x - 18 = 6(1 - 2x) + 4x -2x - 18 = 6 -

How would you solve this... 4^11*|a-5|

4^11 * |a-5| Equals4,194,304|a-5|-well...the answer is 4194304|a-5| i went on this awesome website called mathway.com and you can make a free account to see the steps of that equasion. hope i he

What is the equation of the right bisector of AB

A(-7,-1) B(5,5) midpoint of AB/point on the right bisector (-1,2) slope of the right bisector -1/2 Am I correct if not, please correct me. y=m(x-x1)+y1 y-y1=m(x-x1) y-2=-1/2(x-(-1)) y-2=-1/2x+2 y=-1/

Maths urgent question

If a + b + c =0,, then the value of a^2/a^2 - bc+b^2/ b^2 - ca+c^2/C^2 - abis A) 4 B)2 C) 1 D)0-Lets take a=1, b=2, c=-3. So, a+b+c=0. Now, substitute a,b and c with 1, 2 and -3. 1/1+6 + 4/4+3 + 9/9-

Section: New function from old function.... and my question

A variable star is one whose brigthtness alternately increases and decrease. For the most visible variable star, Delta Cephei, the time between periods of maximum brightness is 5.4 days, the average b

Derivative Challenge. Find my error. 10 points await.

The calculation is in the picture. Please help. http://farm7.static.flickr.com/6106/6271… from http://www.flickr.com/ f(x)= ln (2x^2 + x-1) - ln(x+1) f(x)=ln(2x-1) first derivative = 2*(2x-1)^(-

Help please probability

1. If a single fair die is rolled, find the probabilities; A 4 given that the number rolled was even. 2. If two fair dice are rolled, find the probabilities of; A sum of 8 given that the sum is greate

Can a graph pass a oblique asymptotes

Simple question. If you would like an example y = (x-1)^3/x^2 Full points to the first correct answer.-Sure it can.For example, for y = f(x) = x + (sin(x)/x), the asymptote is y=x, but f(x) oscillate

Integrate the following w.r.t x

∫ (x^2-1)/(x^4-x^2-1)dx-Let, I = ∫(x^2-1)/(x^4-x^2-1)dx =∫ (x^2-1)/x^2(x^2-1+1/x^2)dx =∫ (1-1/x^2)/[(x+1/x^2)-3] say x+1/x=z => (1-1/x^2)dx=dz So, I= ∫ dz/[z^2-(√3)^2] = 1/2√3.log|(z-√3)/(z+√3)|+c =

Evaluate a2 - b +2c if a = 5, b = 17, and c = 2.

ok, this is: a(squared) - b+2c a=5 b=17 c=2 so i plugged in ...idid 5 times 5... 25 25 minus 17 + 2(2) igot... 25-17+4 then, 25- 21 ... igot 4 but the problem is .... that wasnt a choice:/ These a

Maths urgent question plllzzzzzzzzzzzzzzz

the reducedform of COS^6 X + SIN ^ 6 X + 3 COS^2 X SIN ^2 Xis equal to A) 2 B ) 0 C) sin^3X + cos^3X D) 1-1-If you look you can see it all cancels out so the answer is zero (B)-D-C-d)1