MCQ
The imaginary part of $\cosh (\alpha +i\beta )$is [RPET 2000]
- A$\cosh \,\alpha \,\,\cos \,\beta $
- ✓$\sinh \,\alpha \,\,\sin \,\beta $
- C$\cos \alpha \cosh \beta $
- D$\cos \alpha \cos \beta $
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The middle term in the expansion of $\Big(\frac{2\text{x}}{3}=\frac{3}{2\text{x}^{2}}\Big)^{2\text{n}}$ is:
${^\text{2n}}\text{C}_{\text{n}}$
$(-1)\ {^\text{2n}}\text{C}_{\text{n}}\ \text{x}^{-\text{n}}$
${^\text{2n}}\text{C}_{\text{n}}\ \text{x}^{-\text{n}}$
None of these.
| x | 1 | a | a2 | .... | an |
| f | nC0 | nC1 | nC2 | .... | nC2 |
The equation of the line through the points (1, 5) and (2, 3) is:
One card is drawn from a pack of 52 cards. The probability that it is the card of a king or spade is: