Start learning 50% faster. Sign in now
Get Started with ixamBee
Start learning 50% faster. Sign in nowWe look for a function whose derivative is cos 2x. We know that; d/dx (sin 2x) = 2 cos 2x or cos 2x = 1/2 d/dx (sin 2x) = d/dx (1/2 sin 2x) Therefore, an anti-derivative of cos 2x is 1/2 sin 2x.
What is A's present age, if after 10 years his age will be 6 times his age 10 years back?
The sum of the present ages of a father and his daughter is 80 years. Eight years ago, the father’s age was seven times the age of his daughter. Eight...
The current ages of Raman and Raghav are in the ratio of 5:4. In six years, their ages will have a ratio of 11:9. What was the ratio of their ages ten y...
Ratio of present ages of A and B is 7:5, respectively. C who is 3 years older than A will become 36 years older after 12 years. Find the present age of B.
In a classroom there are 14 boys and 11 girls. Average age of each boy and each girl is 21 years and 15 years respectively. The sum of ages of all the b...
Present average age of 4 friends: ‘A’, ‘B’, ‘C’ and ‘D’ is 33 years. If their ages are in the arithmetic progression in the same order a...
Twelve years ago, the average age of a family having four members (father, mother, son and daughter) is (y-2) years. The ratio between the present ages ...
Present ages of P and Q are in the ratio 3:7 respectively. If Q’s age, 10 years hence from now will be 5 times of P’s age, 6 years ago from now, the...