1、e^x- 1~x (x→0)?
2、e^(x^2)- 1~x^2 (x→0)
3、 1-cosx~ 1/2x^2 (x→0)
4、 1-cos(x^2)~ 1/2x^4(x→0)
5、sinx~x? (x→0)
6、tanx~x? (x→0)
7、arcsinx~x? (x→0)
8、arctanx~x? (x→0)
9、 1-cosx~ 1/2x^2? (x→0)
10、a^x- 1~xlna? (x→0)
1 1、e^x- 1~x? (x→0)
12、ln( 1+x)~x? (x→0)
13、( 1+Bx)^a- 1~aBx? (x→0)
14、[( 1+x)^ 1/n]- 1~ 1/nx? (x→0)
15、loga( 1+x)~x/lna(x→0)
Extended data:
There are "two important limits" in the limits of higher mathematics, which refer to:
sinX/x → 1( x→0),
And (1+ 1/x) x → e x (x →∞).
In addition, regarding the equivalent infinitesimal, there are:
sinx ~ tanx ~ arctanx ~ arcsinx ~ e^x- 1 ~ ln( 1+x)
~(a^x- 1)/lna ~[( 1+x)^a- 1]/a ~ x(x→0)、
1-cosx ~ x^2/2( x→0).
Learn the speech at that time 1
Dear teachers, classmates and friends,
Good evening, everyone! First of all, I want to thank my teachers, my classm