tan x = sin x / cos x, so:
lim (tan x / x) = lim (sin x / x cos x). Since it is known that the limit of sin x / x = 1, you have lim 1 / cos x = 1 (since cos 0 = 1).
tan x = sin x / cos x, so:
lim (tan x / x) = lim (sin x / x cos x). Since it is known that the limit of sin x / x = 1, you have lim 1 / cos x = 1 (since cos 0 = 1).
tan x = sin x / cos x, so:
lim (tan x / x) = lim (sin x / x cos x). Since it is known that the limit of sin x / x = 1, you have lim 1 / cos x = 1 (since cos 0 = 1).
tan x = sin x / cos x, so:
lim (tan x / x) = lim (sin x / x cos x). Since it is known that the limit of sin x / x = 1, you have lim 1 / cos x = 1 (since cos 0 = 1).
The limit should be 0.
Any number divided by itself equals 1. ex: 24 / 24 = 1 and 2,154,378,549,215,044.32158 / 2,154,378,549,215,044.32158 = 1. 0 divided by 0 is not defined, although one could define it as the limit as x approaches 0 of x/x and that is 1.
0 divided by15 = 0 15 divided by 0 is undetermined ( infinite)
0
0
sinx = sin0 = 0 tanx = tan0 = 0 you have 0/0 by you limit conditions
secx = 1/cosxand 1/cotx = tanx, therefore1/cosx + tanx = 1 + sinx/cosx, andsin/cos = tanx, therefore1/cosx + tanx = 1 + tanx, therefore1/cosx = 1, therfore1 = cosx.So, therfore, it is not neccesarily true.But if you meansecx plus 1 divided by cotx equals (1 plus sinx) divided by cosx(this is probably what you mean) Let's start over!secx = 1/cosxand 1/cotx = tanx, therefore1/cosx + tanx = (1+sinx)/cosx therefore1/cosx + tanx = 1/cosx + sinx/cosxsinx/cosx = tanx therfore1/cosx + tanx = 1/cosx + tanxDo you think this is correct? Subtract both sides by 1/cosx + tanx:0 = 0So, therefore, this is correct!(BTW, I'm in Grade 6! :P)
It is minus 1 I did this: sinx/cos x = tan x sinx x = cosx tanx you have (x - sinxcosx) / (tanx -x) (x- cos^2 x tan x)/(tanx -x) let x =0 -cos^2 x (tanx) /tanx = -cos^x -cos^2 (0) = -1
d/dx(1+tanx)=0+sec2x=sec2x
The limit should be 0.
1
You can use the L'hopital's rule to calculate the limit of e5x -1 divided by sin x as x approaches 0.
0
Use l'Hospital's rule: If a fraction becomes 0/0 at the limit (which this one does), then the limit of the fraction is equal to the limit of (derivative of the numerator) / (derivative of the denominator) . In this case, that new fraction is sin(3x)/cos(3x) . That's just tan(3x), which goes quietly and nicely to zero as x ---> 0 . Can't say why l'Hospital's rule stuck with me all these years. But when it works, like on this one, you can't beat it.
This answer will assume you understand basic concepts of limits. This is what I am interpreting your problem as: lim x->0+ [(2x)/(tan(x) + sin(x))] It is easy to see that simple substitution of 0 in for x will yield an indeterminate form 0/0. So, L'Hopital's rule will be applied to solve this limit. This rule states that an indeterminate form in a limit can still be solved for by deriving the top and bottom of the divided function and resolving for the limit. The "top" of this expression is 2x, and the "bottom" is tan(x) + sin(x). Deriving both top and bottom yields a new expression: 2/(sec2(x)+cos(x)) Substitution of 0 into this expression yields a determinate form, because sec2(0)=1/cos2(0)=1/1=1 and cos(0)=1, so the new "bottom" is 1+1=2. The general limit of this new expression is equal to the general limit of the original expression, so: lim x->0 [2/(sec2(x) + cos(x))] = 2/2 = 1 = lim x->0 [(2x)/(tan(x) + sin(x))] Since this is a general limit, the limit as x approaches zero from the left and right are equal, so they are both 1. The answer is 1.
There is no limit in a number. There is however a mathematical concept known as a limit but this applies to functions. For instance: The limit of f(n)=(1/n) as n goes to infinity is 0. The limit of f(n)=(n/n) as n goes to infinity is 1.
9x/2x = 9/2 = 4.5