lim_(x→0) (e^x - 1)/sin x =
A1
B-1
C0
D∞
Answer & Solution
Correct answer: A. 1
Use Taylor: e^x - 1 ≈ x for small x; sin x ≈ x. Ratio → 1. Also L'Hôpital: e^x / cos x → 1/1 = 1.
Related questions
In the photoelectric effect, the kinetic energy of ejected electrons is:The electronic configuration of Cr (Z=24) is an exception, written as:By the AUFBAU principle, the 3d subshell starts filling:Hund's rule states that electrons in degenerate orbitals:Heisenberg's uncertainty principle is most accurately stated as:The de Broglie wavelength of a particle with momentum p is:The BALMER series of hydrogen corresponds to electron transitions ending at:The energy of the nth orbit in a hydrogen atom (Bohr's model) is: