Mathematics

Math help! Explain how to find the nth partial sum of a arithmeitc sequence

I try to figure out how to work things with problems with answers in the back of the book so heres an example: 8,20,32,44......., n = 10 the answer was: 620 I tried the sum of a finite arithmetic s

Calculus help please!

The sum of two non negative numbers is 20. Find the sum of the squares that is A.) As large as possible B.) As small as possible That is two seperate questions, not mutiple choice... I am in the uni

Whats the slope of the line

1.(2,-2);(5,7) 2.(1,-6);(9,-8) 3.(-3,7);(-10,0)-1) 3 2) -1/4 3) 1

Do people need to know how to multiply

If you have a calculator, and all the next generations will have a calculator do you really need to know how to multipy?-yes, you do. its part of thinking. i was in the deli and asked for 1/3 pound of

How to inscribe a regular octagon in a given circle

For constructions in geometry.-Draw the circle. Put in a diameter. construct the perpendicular bisector of this diameter, extended to the circle. Bisect the right angles. extend these angle bisectors

Help with integration please

In my calculus class, were working on integration by parts specifically, but the worksheet I was given can utilize various methods. Can someone please help me? Im stuck on a couple of them. The defi

Please help me with some questions about indices? 10 points :D

- What is the square root of 4x ? - Can 4z^-3 be written as 4/z^3 ? Please explain how to solve this question for me : ( 4x^3/2) / (2x^1/2) Thanks in advance!-1. On this one you have to make the

Math Help!!!!!!!!!!!!!!!!!

The product of three consecutive odd integers reduced by 23 is 99 less than the cube of the smallest number and 2. Compute the mean of the three integers.-x = 1st odd consecutive integer x+2 = 2nd odd

Integration with exponentials

In my calculus class, were working on integration by parts specifically, but the worksheet I was given can utilize various methods. Ive been toying with these for a while, but I dont think I did them

Is 5 a prime number /extra words to make 20 characters

Yes-A prime number is a whole number that can be divided only by 1 and itself. the only whole factors of 5 are 1 and 5 so, Yes, 5 is a prime number.-Obviously yes becoz 5 cannot be divided by any natu

Calculus and vectors..

identify the direction vector and a point on each of the following lines. a. r= (3,4) + t(2,1), tER I tried posting before but no one answered, thanks for your help :)-The vector that comes right nex

I need help with Precalc on parabolas

Find the equation of the following parabola. Directrix is the line x=-1/2 Vertex (0,0) How do I do this?-If the directrix is the line x=-1/2, then you know that the focus is (1/2, 0). Since the focus

Calculate \int B f(x)dx with x = (x1, . . . , xn) R^n with the following:

f(x1, x2) = 1/x1 + 1/x2, B = { 1 -See hand written solution at URL below

Simple question about logarithm quotient rule

If I take the ln of y= (ab)/(cd) is that going to be lna+lnb-lnc+lnd or lna+lnb-lnc-lnd? ...to put it simply, Im asking if I should subtract the whole quantity of the divisor or just the first one?-T

Multiply: (3x-1)(4x^2-2x-1).

please show the steps to solve this problem-.. (3x - 1)(4x^2 - 2x - 1) = (3x)(4x^2 - 2x - 1) - (4x^2 - 2x - 1) = 12x^3 - 6x^2 - 3x - 4x^2 + 2x + 1 = 12x^3 - 6x^2 - 4x^2- 3x + 2x + 1 = 12x^3 - (6 + 4)