Integrate secx (1 Viewer)

[Mohit7]

Can anyone tell me how to integrate secx?

thanks

 

[~shinigami~]

1.Times secx by (secx+tanx)/(secx+tanx)

i.e. (secx)(secx+tanx)/(secx+tanx)

2. Expand the top if you want to:

(sec²x + secxtanx)/(secx+tanx)

3. Now that you have the derivative of (secx+tanx) on the top, it will integrate to:

Log_e|secx + tanx| + C

 

[jb_nc]

look at ur standard table of integrals

 

[~shinigami~]

look at ur standard table of integrals

Integrand for Secx isn't on the standard table of integrals. =p

 

[Forbidden.]

Do we need to integrate sec x in 2 Unit Maths ?

 

[~shinigami~]

Do we need to integrate sec x in 2 Unit Maths ?

I'm not too sure. If it means anything, I learned how to integrate secx during 4 Unit. =p

 

[Forbidden.]

the most we've been asked is to integrate tan²x, which is a sneaky way of asking us to integrate sec²x - 1

 

[watatank]

Do we need to integrate sec x in 2 Unit Maths ?

i never had to. that's a bit hard for the average two unit student. i mean who would know to multiply secx by (secx+tanx)/(secx+tanx)?

 

[~shinigami~]

i never had to. that's a bit hard for the average two unit student. i mean who would know to multiply secx by (secx+tanx)/(secx+tanx)?

Good point.

Although it's things like these that make maths interesting.

 

[wrxsti]

just do 1/cosx take cosx to top so u get (Cosx)-1 mmhmmm then integrate i fink