Int[1+tanxtan(x+theta)]dx Class 12 | Integration | IIT JEE

 

Int [sin(x-a) /sin(x-b)] dx Class 12 | Integration

 

If xi 's are the mid point of class intervals of grouped data, fi' s are the corresponding frequencies and x bar is the mean, then summation (fixi-xbar) is equal to

 

The Population of a town decreased by 12% during 1998 and then increased by 8% during 1999. Find the population of the town, at the beginning of 1998, if at the end of 1999 its population was 285120. Class 9 | Compound Interest

 

According to a census taken towards the end of the year 2009, the population of a rural town was found to be 64000. The census authority also found that the population of this particular town had a growth of 5% per annum. In how many year after 2009 did the population of this town reach 74088 ? Class 9 | Compound Interest