MCQ
What is the value of limy → 2y2 - 4y - 2?
- A2
- B4
- C1
- D0
Solution:
Explanation: y2 - 4 = (y - 2)(y + 2)
herefore the fraction becomes, (y + 2)
As y tends to 2, the fraction becomes 4
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The number of terms with integral coefficients in the expansion of $\Big(17^{\frac{1}{3}}+35^{\frac{1}{2}}\text{x}\Big)^{600}$ is:
Let x1, x2, ..., xn be n observations and $\bar{\text{x}}$ be their arithmetic mean. The formula for the standard deviation is given by:
$\sum(\text{x}_\text{i}-\bar{\text{x}})^2$
$\frac{\sum(\text{x}_\text{i}-\bar{\text{x}})^2}{\text{x}}$
$\sqrt{\frac{\sum(\text{x}_\text{i}-\bar{\text{x}})^2}{\text{n}}}$
$\frac{\sum\text{x}_\text{i}^2}{\text{n}}-(\bar{\text{x}})^{-2}$