# Posts by Ravinder

Total # Posts: 6

**math**

the difference of two numbers is 27. 2 times the smaller number minus 3 times the larger is smaller number minus 3 times the larger number.

*March 6, 2017*

**math**

The number of individuals N in a population of a certain species is given by the following function of time, t: N(t)= 100/(1+9e^-t), t>=0 a.)how many ppl are in the population initially(at t=0) b.)determine the size ofa the populations as tgoes towards infiniti? c. what is ...

*November 26, 2012*

**math**

Find the first and second derivative of the function y=f(x)=x^3/(1-(x^2)) Use the information about the derivatives to determine any local maxima and minima, regions where the curve iss concave up or down, and any inflection points

*November 22, 2012*

**math**

For y(x)=ln(3+x2), find y`(6) I keep getting 12 but it says that its the wrong answer, really stuck here

*November 19, 2012*

**math**

thanks so much!

*November 12, 2012*

**math**

Suppose we pump water into an inverted right-circular cone tank at the rate of 6 cubic feet per minute. The tank has the height 9 ft and radius on the top is 8 ft. What is the rate at which the water level is rising when the water is 3 ft deep? Leave the answer approximate. ...

*November 12, 2012*

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