Recent content by colby2152

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    Solving for X in an X^4 Equation: Homework Help and Explanation

    Perhaps thehttp://www.sparknotes.com/math/algebra2/polynomials/section4.rhtml" may help you!
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    Graduate Sum Math Problem: Find Condition for Finite Sum of Positive Real Numbers

    and real?
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    Solve for F: \displaystyle{F = \frac{9}{5}(20) + 32}F = 68 degrees Fahrenheit

    Celsius must be 20 degrees more than Farenheit, so C = F + 20 is the correct substitution.
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    Undergrad Analyzing Time-Series Data: What Model to Use?

    I want to test a series of 36 time periods and 10 data points for each one of those periods. The goal is to see which data points have the biggest effect on change from one period to the next. I thought Chi-Square was the way to go, but I do not have any expected frequencies here. Regression...
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    Graduate What are the Primary Topics in Graph Theory for an Interactive Teaching Module?

    Ditto to HofI
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    News What are the economic impacts of government growth and corruption?

    If he can get US out of the UN, then he has my vote.
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    Should the American drinking age be repealed and violence accepted on TV?

    The drinking age could actually be lowered to an age like 15 (similar to Europe), but the lack of public transportation in such a large country as the United States makes it a dead issue. The driving age should actually be lowered across the board to 16. Raising the driving age to 17 or 18...
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    Undergrad Spivak, Calculus - Where to find or is it covered?

    Stewart's it is...
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    Undergrad Calculus I - without a calculator

    Calculators don't have their place in Calculus or Analysis.
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    Graduate How Can dx and dy Be Manipulated in Differential Equations and Integrals?

    Strangely enough, the small change terms like dx and dy can be treated as fractions in some cases, but not all.
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    Graduate How Do You Calculate the Taylor Polynomial of Degree 10 for sin(2x) at x=0?

    Please see my reply on your other double post.
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    Graduate How Do You Calculate the Taylor Polynomial of Degree 10 for sin(2x) at x=0?

    It was looking right until the end... Sixth derivative - you forgot a negative sign Ninth derivative - 512, not 412 Tenth derivative - the sign probably stays the same after double corrections, 512*2=1024 Other than those small errors, you are golden!
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    Undergrad What is the solution to ΣΣ(sinx)(cosx)?

    Are one of the trig functions supposed to be a function of y?
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    What are the key concepts for solving trigonometric functions?

    f(x) = sin^2(x) - sin(x) f'(x) = 2sin(x)cos(x) - cos(x) 2sin(x)cos(x) - cos(x) = 0 cos(x)(2sin(x) - 1) = 0 Solve for cos(x) = 0 & sin(x) = 0.5 Then you need to test values for all x values that satisfy those equations within the boundary 0 < x < \frac{3\pi}{2}
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    Undergrad What is the antiderivative of x^2 + (5/x^5) +cos9x - e^-7x?

    Well, do you know basic integration rules for powers, exponential, and trigonometric functions?