Question

diff equations

Answer 1

when i try plugging in the y and x values i get 0=5

Answer 2

how do i remove the sec

Answer 3

because i know this is right

Answer 4

For your answer did you sub \[\sqrt{x^2-4} \]
x = 2 sec(t)

Answer 5

yeah and i integrated to get int (2tan(x)2sec(x)tan(x)dx/2sec(x)

Answer 6

dx= 2secxtanxdx

Answer 7

sqrt(x^2-4)=2tanx

Answer 8

Give me a moment while I attempt to get what you got doing the same substitution.

Answer 9

if it helps lol..

Answer 10

they just use different y and x values

Answer 11

That exactly what I did but instead of Theta I used t to make it easier for me.

Answer 12

so.. where do i go from here?

Answer 13

You have the correct answer but are just trying to remove the inverse secant?

Answer 14

x = 2 sec(t)

Answer 15

i can't have any trig function in the equation

Answer 16

It doesn't make sense that you wouldn't have the sec^-1 there

Answer 17

Sec(x/2)^-1 = cos(x/2)

Answer 18

Using identities you can change that to a cosine but other than looking back at the original substitutions im not sure what other changes you can make?

Answer 19

@drbgonzal did you end up figuring it out?

Answer 20

Maybe they want it completely simplified.