1 - ₁ - £x² = 1 + x + x² + X x=0 +++1-23-²² 3! sin x-(-1). cos x=(-1)- -(-1*- 1 - 2 + 1 - 4 - = x-20+1 tan x- - Σ(-1). -- - x -+- + ... -0 2n + 1 In(1 + x) − (−1)²¹-x-+-4 + ··· n Find the Mac series of f(x) by any algebraic method using the above known expansions. Show all algebra. Write the answers in the summation notation. 9. f(x)=xex²-2 10. f(x) = sin(2x³) x² x²0+1 (2n + 1)! = (2n)! +-+

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