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(1)
x->升老0
f'吵旦升(x) = x^k .sinx = x^(k+1) +o(x^(k+1))
g(x)=a∫迟慧(0->x^2) [√(1+t) -1] dt
g'(x) = 2ax. [√(1+x^2) -1] = ax^3 +o(x^3)
=>
k+1=3
k=2
and a=1
x->升老0
f'吵旦升(x) = x^k .sinx = x^(k+1) +o(x^(k+1))
g(x)=a∫迟慧(0->x^2) [√(1+t) -1] dt
g'(x) = 2ax. [√(1+x^2) -1] = ax^3 +o(x^3)
=>
k+1=3
k=2
and a=1
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