i-49 এর মান কত?
সমাধান
সঠিক উত্তর: Option D
আমরা জানি,
i = √-1;
i2= -1;
i3 = i2i = - i;
i4 = i2.i2 = (-1).(-1) = 1
i-49
= 1/i49
= 1/{i48.i}
= 1/{(i4)12.i}
= 1/i
= i4/i
= i3
= - i
i = √-1;
i2= -1;
i3 = i2i = - i;
i4 = i2.i2 = (-1).(-1) = 1
i-49
= 1/i49
= 1/{i48.i}
= 1/{(i4)12.i}
= 1/i
= i4/i
= i3
= - i
