৬সরল কর 2a 1 3b 1, সূচক ও লগারিদম, গণিত

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Question:৬সরল কর ` (2a^-1 + 3b^-1)^-1`

Answer সমাধান ` (2a^-1 + 3b^-1)^-1`

         `= (2 xx 1/a + 3 xx 1/b)^-1`

         `= (2/a + 3/b)^-1`

         `= ((2b + 3a)/(ab))^-1`

         `= 1/((2b + 3a)/(ab))`

         `= 1 xx (ab)/(3a + 2b)`

         `= (ab)/(3a + 2b)`   Ans.

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Question:৬সরল কর ` (2a^-1 + 3b^-1)^-1`

Answer সমাধান ` (2a^-1 + 3b^-1)^-1` `= (2 xx 1/a + 3 xx 1/b)^-1` `= (2/a + 3/b)^-1` `= ((2b + 3a)/(ab))^-1` `= 1/((2b + 3a)/(ab))` `= 1 xx (ab)/(3a + 2b)` `= (ab)/(3a + 2b)` Ans.