Let Differentiate both sides w.r.t x Let Equating coefficient both sides, we get On solving above equations
Let us consider two digit numbers ab and cd. For example: 23 × 45 Now, Now, we can try in one step.
Formula to transform the product into sum or difference The sine formula of the sum and difference of two angles is written as follows: Add both the expression as follows: Then, subtract expression (2) from expression (1) as follows: Similarly consider the cosine formula of the sum and difference of two angles is […]
1. If each term of an A.P are added or subtracted with the same constant, then the resulting sequence is also in A.P with the same common difference. Example: 2, 5, 8, 11, 14, …………………….. . are in A.P. d = 3 when k = 2 is added in each term 4, 7, 10, 13, […]