If y=x then dy/dx=1, so wat does this mean ??

Question

wat does this 1 stand for???

Answer 1

1 is a constant that is one.

y =x means dy/dx =1 that is rate of change of x wrt itself is 1

Answer 2

In Calculus, dy/dx stands for a Derivative, or Differential. Which is a measure of Rate of Change, or difference caused in the dependent variable y, because of a change in the independent variable x. It is a ratio between increment in dependent variable y and increment in independent variable x. When, you take a course in Calculus, you will learn all the steps involved. If you want a full lecture here, ask for it, and get the answers.

Answer 3

dy/dx =1 that means slope of tangent of the curve y=x is 1 or the tangent at any point on the curve of the function y=x makes angle 45 degrees with the positive direction of the x_axis

Answer 4

Generally in math it is assumed that every variable that doesn't have a number next to it has a one next to it. The correct way to say y=x is actually 1y=1x. But since multiplying by one always equals the same number and everyone knows that numbers is there, it is less confusing to simply drop that one out of the equation.

Since in your equation d is always the same, if you divide the d in the numerator (top numbers) by the d in the denominator (numbers under the slash divisor) it divides out and equals 1.
Thus simplifying your expression to y/x=1. Since x and y equal each other you can do the same there. You can substitute y for x or x for y in the equation and divide it out.

Which leaves you with 1*1*1/1*1*1 (all the ones next to the d's and x's and y's). If you multiply it out you get 1/1 (since all muliplications times one equals the same number 1*1*1=1).
Leaving you with 1/1. Since dividing anything by 1 equals the same number, the whole thing equals 1.

Answer 5

dy/dx means you need to find the derivative of x:

the x is raised to 1 even though its not written there:

x^(1-1)
x^0 = 1

anything raised to the power of 0 always equals 1

Answer 6

If y=x then dy/dx=1, so wat does this mean/

It means that dy = dx , which means tha as x changes, y changes an equal amount. The rate of change of the function is constant everywhere.

Answer 7

It means that if you graph y - x in the xy plane, then the line has slope 1. It also means that if the equation y = x represents the rate of change of y with respect to x, then that rate of change is 1.

Answer 8

i think it is not complicated because it is an answered question i think it maybe that it wants to proof that x=y , but i think its answer now is: y=x and Dy/dx = 1/1 (by multiplying) dx=Dy and x=y so d=d and d is it self with my pleasure

Answer 9

that "D" is also "1"

it means that every variable you just mentioned is the same relative value and is thus equal to each other.