Matematika

Pertanyaan

1. \lim_{x \to 0} \frac{x^2}{sin^27x}
2. \lim_{x \to 4} \frac{tan 3x}{4x}
3. \lim_{x \to 0} \frac{1-cos2x}{sin(2x- \pi) }
4. \lim_{x \to 0} \frac{arctan x}{1-7x}

1 Jawaban

  • limit

    1. lim(x->0)  x²/ sin² 7x = (x²)/(7x)² = 1/49

    2. lim(x->0)  tan 3x /(4x)=   3/4

    3. lim(x->0) (1- cos 2x)/ sin(2x - π) = (1 - cos 2x) /(- sin (π- 2x)
    = (1 - cos 2 x) / - cos  2x
    = 1/cos 2x  + 1
    x = 0 -- > 1+ 1=  2

    4.


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