multiplying

  1. T

    Multiplying square roots

    Hey, So this: √(2t^(2)+1+2t)*√(2t^(2)+1+2t) is equal to 2t^(2)+2t+1 But I can't seem to understand how, and what rules... PLS HELP
  2. A

    multiplying logarithms

    Hi; How should log(anybase)(x) * log(anybase)(x) be approached? Thanks.
  3. T

    Linear Algebra Help. With multiplying matrices

    I've attached the question and solution as the answers. The problem I dont understand is number 12. I assume the question is asking us to find Ax...In which case I got all of them wrong anyway \begin{bmatrix} 0 & 0 & 1 \\0 & 1 & 0 \\ 1 & 0 & 0 \\ \end{bmatrix} * \begin{bmatrix}x \\y \\z \\...
  4. C

    Multiplying binomials

    (X+1)2= (X+1) (X+1) Solve.
  5. M

    multiplying taylor series

    I am trying to multiply the following two taylor series together f(x)=e^-x In(1+x) I know both series expand e.g .In(1+x) =x-\frac{1}{2}x^2+\frac{1}{3}x^3-\frac{1}{4}x^4 and e^-x = 1+x+\frac{1}{2!}x^2+\frac{1}{3!}x^3+\frac{1}{4!}x^4 how do I multiply these together , for example do I multiply...
  6. S

    Exactly how does multiplying two negative numbers produce a positive number?

    I'm praying that someone will help me understand how adding negative numbers produces a negative number but multiplying negative numbers, which is shorthand addition (e.g., 2x3 is a shorter/faster way of writing 2+2+2), produces a positive number. Thus far, I've only received "that's what the...
  7. C

    Fraction Multiplying..

    Hi so first off, not even sure if I am in the right place to post this as I saw no other "option" for lack of a better word where this would be placed correctly, when scrolling through the forums and sub-forums... basically... I am terrible at Math, I dare say I'm probably borderline mentally...
  8. S

    Multiplying large numbers

    I couldn't find an exact forum for this here - but it's very basic so I'd imagine anyone could help with it, and it stems from an algebra question so.... Basically when doing problems without using the calculator I've been finding that I'm having to do large long multiplications that seem like...
  9. M

    Compute binary multiplication without multiplying

    Hi all. As the tittle says, the problem is to find a way to compute the result of the multiplication of 2 binary variables without multiplying them. I have 2 binary variables X and Y, such that the summation tables is: X Y X+Y 0 0 0 0 1 1 1 0 1 1 1 2 The subtraction table is: X Y X-Y 0 0 0...
  10. S

    Question about Multiplying a constant and two polynomials

    Lets say I have 9(2x^2-4x+5)^8(4x-4). Does the 9 get distributed to both polynomials? I'm attempting to differentiate using the product and extended power rule from calculus, but need to understand the Algebra behind it all. Any pointers would be greatly appreciated.
  11. S

    Multiplying Areas in geogebra

    I need to multiply an area of a triangle by 5 and make a construction of this. I am using geogebra with limited tools. (I cannot use dilation tool, segment with given length, not angle with given measurment). I know the scale factor is sqrt(5), but I can't figure out how to make something that...
  12. C

    Solving inequality by multiplying across

    Just looking for some guidance on the following problem: Find the least value of n (Natural number) for which (5n + 3 / 7 - n) < 1, n <> 7 One approach: 5n + 3 < 7 - n 6n + 3 < 7 6n < 4 3n < 2 n < 2/3 Since n is a Natural number we get n = 0 as the least value The 1st step above involves...
  13. R

    Multiplying trig functions

    If(secx)(tanx) < 0, which of the following must be true? I. tanx <0 II. scsx cotx < 0 III. x is in the third or fourth quadrant So I first simplified secx * tanx into sinx/cos^2x using the property that tanx = sinx/cosx, and then i graphed it on my calculator, but I'm not sure what to do next.
  14. C

    Multiplying Trigonometric Expressions

    (cot(x)-tan(x))(cot^2(x)+1+tan^2(x)) The answer is cot^3(x) - tan^3(x) I cannot get to the same outcome. Any help would be great thanks!
  15. iLiTH

    Multiplying Negative Fractions?

    -4/3(3/-4y) (where the slashes represent fractions) This problem is giving me a few problems... -4/3 means that both numerator and denominator is negative, right? What about 3/-4? When multiplying these, does 3/-4 become completely negative like -4/3? Solving this problem as-written gives me...
  16. Y

    Multiplying Polynomials

    Is there a way I can multiply polynomials and get answers in variables instead of numeric values? (So if I enter (x^2+1)(x+x^3) I get 2x^3+x^5+x)
  17. N

    Multiplying cycles together

    Hi, I can manage to multiply 2 things together if they are of the form say: A=( 1 2 3 4 5 6 7 8 9 ) 6 3 7 9 4 2 1 8 5 B=( 1 2 3 4 5 6 7 8 9 ) 3 5 1 2 7 9 6 4 8 I.e AB = ( 1 2 3 4 5 6 7 8 9 ) 7 4 6 3 1 5 2 9 8 However I'm then asked to write A and B in cycle...
  18. A

    Multiplying and Dividing Rationals

    Would I eliminate 3n first or simplify 3n+9 on the bottom?
  19. T

    multiplying 2 numbers

    523 * 489 using mental math 523 * 500 = 52300 + 52300 + 52300 + 52300 = 11 less groups... sounds complicated. Any other ideas? Thanks, Terminator
  20. T

    multiplying 2 numbers

    523 * 489 using mental math 523 * 500 = 52300 + 52300 + 52300 + 52300 = 11 less groups... sounds complicated. Any other ideas? Thanks, Terminator