а) f(x) = sin(9x)
sin(x) = x - x^3/3! + x^5/5! - x^7/7! + ...
9x - (9x)^3/3! + (9x)^5/5! - (9x)^7/7! + ...9x - 729x^3/3! + 32805x^5/5! - 1789290x^7/7! + ...
f(x) = 9x - 729x^3/3! + 32805x^5/5! - 1789290x^7/7! + ...
б) f(x) = x^2*e^x + 1
e^x = 1 + x + x^2/2! + x^3/3! + x^4/4! + ...
x^2(1 + x + x^2/2! + x^3/3! + x^4/4! + ...) + 1x^2 + x^3 + x^4/2! + x^5/3! + x^6/4! + ... + 1x^2 + x^3 + x^4/2! + x^5/3! + x^6/4! + ...
f(x) = x^2 + x^3 + x^4/2! + x^5/3! + x^6/4! + ...
в) f(x) = 2ln(1 + 3x)
ln(1 + x) = x - x^2/2 + x^3/3 - x^4/4 + ...
2(3x - (3x)^2/2 + (3x)^3/3 - (3x)^4/4 + ...)6x - 9x^2/2 + 27x^3/3 - 81x^4/4 + ...
f(x) = 6x - 9x^2/2 + 27x^3/3 - 81x^4/4 + ...
а) f(x) = sin(9x)
sin(x) = x - x^3/3! + x^5/5! - x^7/7! + ...
9x - (9x)^3/3! + (9x)^5/5! - (9x)^7/7! + ...
9x - 729x^3/3! + 32805x^5/5! - 1789290x^7/7! + ...
f(x) = 9x - 729x^3/3! + 32805x^5/5! - 1789290x^7/7! + ...
б) f(x) = x^2*e^x + 1
e^x = 1 + x + x^2/2! + x^3/3! + x^4/4! + ...
x^2(1 + x + x^2/2! + x^3/3! + x^4/4! + ...) + 1
x^2 + x^3 + x^4/2! + x^5/3! + x^6/4! + ... + 1
x^2 + x^3 + x^4/2! + x^5/3! + x^6/4! + ...
f(x) = x^2 + x^3 + x^4/2! + x^5/3! + x^6/4! + ...
в) f(x) = 2ln(1 + 3x)
ln(1 + x) = x - x^2/2 + x^3/3 - x^4/4 + ...
2(3x - (3x)^2/2 + (3x)^3/3 - (3x)^4/4 + ...)
6x - 9x^2/2 + 27x^3/3 - 81x^4/4 + ...
f(x) = 6x - 9x^2/2 + 27x^3/3 - 81x^4/4 + ...