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0:02:04

Find the derivative of sqrt(3x) using definition of derivative

0:02:30

Find the limit of 7 of [1/(t+4) - 1/11]/(t-7)

0:03:37

Show clearly that 4/(sqrt(3)+sqrt(2)+1)=2+sqrt(2)-sqrt(6)

0:04:01

arcsin(1/3)/arccos(7/9)+sin(arccos(sqrt(27)/sqrt(28))+arcsin(sqrt(3)/sqrt(28))

0:03:21

Integral of (x-1)^3 sqrt(2x-x^2)

0:01:57

tan(15)

0:02:28

Discovering Extrema: Locating and Analyzing Turning Points in Graphs

0:01:54

How to Factor 8x^8 - 48x^6y^2 - 8x^7y - 6y^5 + x^2y^3 - xy^4

0:02:45

X can do a certain job in 10 hours and Y can do it in 12 hours. After X and Y have been working

0:01:52

Two people working together can do a job in 6 hours. if one of them works twice as fast as the other

0:01:22

10 men working 6 hours a day can complete a work in 18 days

0:03:39

A forester mixes gasoline and oil to make 2 gallons of mixture for his two cycle chain-saw engine

0:09:02

In a triangle ABC of sides AB=c, BC=a, AC=b, the equivalent of (cos(B)+cos(C))/(1-cos(A)) is:

0:01:24

What's the value of 'a' when the remainder=13, p(x)=(x^5-7x^3+ax+1)/(x-2)

0:03:51

By using the discriminant, find the point where x+y=k, is a tangent to the circle x^2+y^2-4y-4=0

0:02:41

Show that the integral from 2 to 4 of 4xlnx dx = 56ln2 - 12

0:03:40

Consider the function f(x)=sinx+sin(3x)/3. Show that f(x)=2/3sinx(2cos^2x+1)

0:01:46

Find the first term of the sequence 2,6,18,54,... which exceeds 10,000?

0:02:29

Given that 3/sinx=5(sinx-cosx), find the exact value(s) of tanx

0:05:13

Simplify cube root of 17 - 27/4 square root of 6

0:02:54

Find the value of (1+tan1)(1+tan2)...(1+tan45)

0:05:10

Find the largest power of 2, 5, 7, 13 that is a divisor of 100!

0:01:40

Find the largest power of 2 and 10 that is a divisor of 10!

0:02:41

Sum the series 1x1!+2x2!+3x3!+...+nxn!