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Nuetrik [128]
3 years ago
6

A child is building a triangular tower. The first (bottom) row of the 12-row tower is made with 12 blocks. Each successive row

Mathematics
2 answers:
likoan [24]3 years ago
6 0

i have answered this question before let me post an image

qaws [65]3 years ago
6 0

Answer:

It's the 1st option

Step-by-step explanation:

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[ \because \dfrac{d}{dx}(x^n)=nx^{n-1}]

=\dfrac{1}{x}+\dfrac{1}{2}(\dfrac{1}{x^2-1})(2x) = \dfrac{1}{x}+\dfrac{x}{x^2-1}\\\\\\=\dfrac{(x^2-1)+(x^2)}{x(x^2-1)}\\\\\\=\dfrac{2x^2-1}{x(x^2-1)}

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