C
the sum to infinity of a geometric series =
where a is the first term and r the common ratio
= = 81 × 3 = 243
Solve the inequality: x^2(x+2)(x-7) is greater than or equal to 0
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C
the sum to infinity of a geometric series =
where a is the first term and r the common ratio
= = 81 × 3 = 243