Yes, this is for math class.
"Fact" 1:
sin(t) = t - [(t^3)/3!] + [(t^5)/5!] - [(t^7)/7!] ...
In English, Sine of t EQUALS (t) MINUS (t cubed over 3 factorial) PLUS (t to the 5th over 5 factorial) MINUS (t to the seventh over seven factorial), and this continues in an infinite series.
"Fact" 2:
cos(t) = 1 - [(t^2)/2!] + [(t^4)/4!] - [(t^6)/6!] ...
"Fact" 3:
e^t = 1 + t + [(t^2)/2!] + [(t^3)/3!] + [(t^4)/4!] ...
e being Euler's number.
"Statement" 1:
i * sin(t) = it - [(i{t^3})/3!] + [(i{t^5})/5!] - [(i{t^7})/7!] ...
(i in this problem is the irrational number i, the square root of -1.)
"Statement" 2:
e^it = 1 + it - [(t^2)/2!] - [(i{t^3})/3!] + [(t^4)/4!] + [(i{t^5}/5!] ...
"Statement" 3:
i * sin(t) + cos(t) = e^it
"Statement" 4:
e^i(pi) = -1
And therefore,
1 + e^i(pi) = 0
"Question"
Assume the "facts" are true. The "statements" are an inductive proof of Euler's formula. However, the reasoning of the statements is WRONG somewhere, and we are supposed to "object" to something about it. Your mission, should you choose to accept it, is to find out what the objection is supposed to be.
Thanks in advance.