Difference between revisions of "Megan Homework"
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#<math>\sqrt{8x} = 2 \sqrt{4x}</math> | #<math>\sqrt{8x} = 2 \sqrt{4x}</math> | ||
#<math>e^{-1/2} = -\sqrt{e}</math> | #<math>e^{-1/2} = -\sqrt{e}</math> | ||
+ | #<math>x^{-2/3} = \sqrt{x^3}</math> | ||
# <math>(g \cdot f)(x) = g(x)f(x) </math> | # <math>(g \cdot f)(x) = g(x)f(x) </math> | ||
# <math>(g \circ f)(x) = f(g(x)) </math> | # <math>(g \circ f)(x) = f(g(x)) </math> | ||
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## <math>(g \circ f)(z) = (f \circ g)(z) </math> | ## <math>(g \circ f)(z) = (f \circ g)(z) </math> | ||
#<math>t^2t^3 = t^6</math> | #<math>t^2t^3 = t^6</math> | ||
− | #<math>\frac{2x+1}{x-1} = \frac{2x}{x} = 2</math> | + | #<math>\frac{2x+1}{x+1} = \frac{2x}{x} = 2</math> |
+ | |||
+ | ===Simplify=== | ||
+ | #<math>\frac{2}{2+3\sqrt{2x}}</math> | ||
+ | #<math>\frac{x}{x^{-2/3}}</math> | ||
+ | #<math>r^{-1}</math> | ||
+ | #<math>\frac{x+1}{x^2-1}</math> | ||
+ | |||
+ | ===At what points are the following expressions undefined?=== | ||
+ | #<math>\frac{x-1}{x+1}</math> | ||
+ | #<math>x^{-1/2}</math> | ||
+ | #<math>\frac{6}{x^2-1}</math> | ||
+ | #<math>\frac{2}{|x+1|-1}</math> | ||
+ | |||
+ | |||
+ | ==Problems ||== | ||
+ | |||
+ | ===Simplify=== | ||
+ | |||
+ | 1.) <math>\frac{\sqrt{x}+4}{3-\sqrt{x}}</math> | ||
+ | |||
+ | 2.) <math>\frac{x^2}{\sqrt{x}+5}</math> | ||
+ | |||
+ | 3.) <math>\frac{x^2 + 2x +1}{x+1}</math> | ||
+ | |||
+ | 4.) <math>\frac{x^2 -10x + 25}{(x+5)(x-5)}</math> | ||
+ | |||
+ | 5.) <math>\frac{4x^2 - y^2}{2x + y}</math> | ||
+ | |||
+ | |||
+ | 6.) <math>x^2 x^7</math> | ||
+ | |||
+ | 7.) <math>y^5 y^9</math> | ||
+ | |||
+ | 8.) <math>x^5 x^{-4}</math> | ||
+ | |||
+ | 9.) <math>x^{-2}x^{-3}</math> | ||
+ | |||
+ | |||
+ | 10.) <math>\frac{x^5}{x^2}</math> | ||
+ | |||
+ | 11.) <math>\frac{y^2}{y^{5}}</math> | ||
+ | |||
+ | 12.) <math>\frac{y^{-3}}{y^{3}}</math> | ||
+ | |||
+ | 13.) <math>\frac{y^{-2}}{y^{-8}}</math> | ||
+ | |||
+ | |||
+ | ===Solve for x=== | ||
+ | |||
+ | 1.) <math>x^{1/2} = 6</math> | ||
+ | |||
+ | 2.) <math>x^{1/3} = 3</math> | ||
+ | |||
+ | 3.) <math>x^3 = 125</math> | ||
+ | |||
+ | 4.) <math>x^4 = 16</math> | ||
+ | |||
+ | |||
+ | 5.) <math>\sqrt{x+2} = x</math> | ||
+ | |||
+ | 6.) <math>\sqrt{x} = -\sqrt{3}</math> | ||
+ | |||
+ | 7.) <math>\sqrt{x+1} = \sqrt{2}x</math> | ||
+ | |||
+ | 8.) <math>\sqrt{x+30} = -7</math> | ||
+ | |||
+ | 9.) <math>\sqrt{x^2 - 3x -1} = 3</math> | ||
+ | |||
+ | 10.) <math>\sqrt{4x^2 - 6} = \sqrt{5x}</math> | ||
+ | |||
+ | 11.) <math>\frac{\sqrt{x^2+6x}}{\sqrt{8}} = -2</math> | ||
+ | |||
+ | 12.) <math>\sqrt{(x+1)(x-5)} = 0</math> | ||
+ | |||
+ | 13.) <math>\sqrt{(x+7)(x+5)} = -2</math> |
Latest revision as of 22:42, 13 April 2010
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At what points are the following expressions undefined?
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