Multiple choice general knowledge math & puzzles

Series Expansion of sin(x)= ?

  1. x-(x^3)/3!+(x^5/5!)-....

  2. 1-(x^2)/2!+(x^4)/4!-.....

  3. 1+x+(x^2)/2!+(x^3)/3!+....

  4. 1-x+(x^2)-(x^3)+......

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The Maclaurin series expansion of sin(x) contains only odd powers of x with alternating signs. Option A shows this exact pattern: x - x³/3! + x⁵/5! - ... Option B is the expansion for cos(x) (even powers only). Option C is the expansion for eˣ (all positive terms). Option D is a simple geometric series.