poissonrouge
New member
- Joined
- Jan 6, 2021
- Messages
- 2
Hi i don't understand how to answer this question :
The equation [MATH] x(e^{x}-e^{-x})-e^{x}=0 [/MATH]A. doesn't have any of its solutions in the interval [0,+[MATH] \infty [/MATH] ]
B. has exactly one solution in [MATH] \Bbb R [/MATH]C. doesn't have any of its solutions in the interval ]-[MATH]\infty[/MATH], 0[
D. has at least two solutions in [MATH] \Bbb R [/MATH]
I don't understand how to solve this (the answer is D.). Does anyone know? Thanks a lot
The equation [MATH] x(e^{x}-e^{-x})-e^{x}=0 [/MATH]A. doesn't have any of its solutions in the interval [0,+[MATH] \infty [/MATH] ]
B. has exactly one solution in [MATH] \Bbb R [/MATH]C. doesn't have any of its solutions in the interval ]-[MATH]\infty[/MATH], 0[
D. has at least two solutions in [MATH] \Bbb R [/MATH]
I don't understand how to solve this (the answer is D.). Does anyone know? Thanks a lot