Yes, 1 can divide. Anything divided by 1 equals that number which was first divided. For example, x/1 = x. x divided by 1 equals x
Multiply by 1/x
Anything to the power 0 is 1. Using the laws of powers to get to x to the power n-1 from x to the power n you divide by n; eg to get 4 squared (16) from 4 cubed (64) you divide 64 by 4. If you start with x to the power 1 and want x to the power zero, you divide by x. And x divided by x is 1.
728 Divide by two. 364,2 Divide by two. 182,2,2 Divide by two. 91,2,2,2 Divide by seven. 13,7,2,2,2 Stop.
cos2 x /(1 - sin x)= (1 - sin2 x )/(1 - sin x)= (1 + sin x)(1 - sin x)/(1 - sin x)= 1 + sin x
If that is x to the power 0, then it = 1, irrespective of the value of x. Consider for example x =4. x squared is 16. To get from x to the power 2 to x to the power 1, you divide by x, giving 4 to the power 1 = 4. Similarly, to get from x to the power 1 to x to the power 0, you divide by x, giving 4 to the power zero = 1.
The inverse of x is written as 1/x. If we divide that by x, we get 1/x/x, which can also be written as 1/x * x/1 = x/x = 1. Then we add 4, 1 + 4 = 5.
== == Cos2x - 1 = [1 - 2sin2 x] - 1 = - 2sin2 x; so [Cos2x - 1] / x = -2 [sinx] [sinx / x] As x approaches 0, sinx / x app 1 while 2 sinx app 0; hence the limit is 0.
(c/x) /v = (c/x) * (1/v) = c/(x*v), so c divided by (the product of x and v).
If the question is 3(x-1) = 15, you divide 15 by 3. That tells you what x-1 is. Then you add 1. That's x.
1/2 x 1/3 = 1/6
No. And the proof is simple. Suppose there were such a number, X. Then X+1 is also a number and X+1 does not divide X.