Calculus

Don't you have a calculator? Just multiply them together. It's really simple and a whole lot faster than going to a website and make us do your homework for you.

Including the initial digit 3, the 13628th digit of pi is 7.

509.1

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(3x+2)-(5+7x) = 3x+2-5-7x = -4x-3

3x+2 is -4x-3 times greater than 5+7x.

(3x)^4 +(4x)^3 -(36x)^2 +1 or 3x^4 + 4x^3 -36x^2 +1? Not sure from the way you said it.

In either case the method is the same. Use the power rule for differentiation, d/dx(x^n) = nx^(n-1), to take the derivative of the equation term by term, and then set this equal to zero and solve for x. You will get a cubic function when you do this, so you can try to factor it after you differentiate to simplify the problem.

Assuming the second case (It seems more likely) differentiating gives the following, which I have set equal to zero:

12x^3 + 12x^2 - 72x=0

x(12x^2 +12x-72)=0 Factor out an x

x(12)(x-2)(x+3)=0 Factor some more

This gives horizontal tangents at x=-3,0,and 2. Now all you have to do is plug some easy numbers into the derivative from the intervals between these values. Negative derivative means decreasing, positive means increasing. Good luck!

Unfortunately, limitations of the browser used by WA means that we cannot see most symbols. It is therefore impossible to give a proper answer to your question. Please resubmit your question spelling out the symbols as "plus", "minus", "equals" etc.

It is difficult to say because of uncertainty as to what xx-4 represents.

x2 - 4 = 4 gives x2 = 8 so x = ± 2*sqrt(2)

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Unfortunately, limitations of the browser used by Answers.com means that we cannot see most symbols. It is therefore impossible to give a proper answer to your question. Please resubmit your question spelling out the symbols as "plus", "minus", "equals" etc. Also use ^ to indicate powers (eg x-squared = x^2).

It's hard to write this on a typewriter keyboard. Do you mean

xb + (1-x)b , or xb + 1 - xb , or maybe even x(b+1) - xb ?

The first cannot be factored.

The second equals 1, so it is already prime (cannot be factored).

The third could be written as xb(x) - xb(1), so there is a common factor of xb, and the expression can be factored as

xb(x-1). This is prime.

9x2 - 6xy + y2 - 81

= (3x - y)2 - 92

= (3x - y - 9)(3x - y + 9)

It would have been far simpler and quicker to use your calculator but since you are unable or unwilling to make that effort, the answer is 2.1

Y = x - 7

When x = 75.964 degrees plus or minus any multiple of 180 degrees.

It comprises two (or more) shapes which are replicated so that they cover a plane without overlap or gaps.

The same way a school child learns. Reading, practicing, etc. However, at an advanced age it might be a bit more difficult to learn.

256 is the next number, 3+5=8. 3+5+8=16. 3+5+8+16=32. and so on.

There are 10 millimetres in one centimetre. Therefore, 18 centimetres is equal to 18 x 10 = 180 millimetres.

Y = 82x, the value of Y will be 82 times whatever value of x that is chosen

one.

Yes, though an oval could be as well, i guess that there would be an individual word for that though.

Use a variant of Archimedes Principle. Immerse the person completely in a tank of water (only do this for a short period of time, of course) and measure the rise in the water level and multiply by the area of the tank to get the change in volume.

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