Q: A five foot ladder is leaning against the wall. If the top slides down at a rate of 5 feet per second, then how fast is the base of the ladder moving away from the wall at the instant when the top of the ladder is 3 feet above the ground.
Month: June 2008
Implicit Differentiation Example
Q: If x2 +xy + y2 = 3, what is the equation of the tangent line to this graph when y = 1.
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Product rule with chain rule example
Q: If f(x) = (-3x5+2x4+5x)20(ln(2x2+2))20, find f'(x).
Fractional Exponents
Q: What does it mean when you have a fraction as an exponent?
A: Firstly, we must be familiar with the following: Xa/b = b√Xa
When rewriting, think of a fractional exponent as a “tree”. The top number is the number of branches (how many multiples of X there are) and the bottom number is the root.Read More »
Derivatives and Anti-derivatives
Q: There are so many rules when it comes to taking derivatives and anti-derivatives… how do I keep them all straight? More importantly, how do I know when to apply which rule?
Ask me your questions and let me help!
Questions?
College Algebra is one of the hardest classes to pass (or get the grade you desire). Many College Algebra classes have 200-300 students, which makes it hard for a student to get any quality one-on-one time. If you are struggling or have questions, please post them here so I can help!
Zooming In
Q: Why do I have to press “ENTER” twice when zooming in on a graph when using my TI Graphing Calculator?
Converting decimals to fractions
Q: How do I convert a decimal answer into a fraction on my TI Graphing Calculator?
