Mathematics
Doug Fir's user avatar
Doug Fir's user avatar
Doug Fir's user avatar
Doug Fir
  • Member for 5 years, 8 months
  • Last seen more than a week ago
  • San Francisco, CA, USA
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Top posts
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question
7
Find all complex solutions (real and non real) of $2x^3-3x^2+32x+17$
Aug 21, 2020
question
6
Solve $4+\frac{1}{x}-\frac{1}{x^2}$ using quadratic formula
May 3, 2019
question
4
Does $-6(x-\frac{1}{2})^2$ = $-\frac{3}{2}(2x-1)^2$?
Jul 28, 2020
question
4
Simplify $\sqrt[4]{\frac{162x^6}{16x^4}}$ is $\frac{3\sqrt[4]{2x^2}}{2}$
Jan 6, 2019
question
4
Trying to simplify $\frac{\sqrt{8}-\sqrt{16}}{4-\sqrt{2}} - 2^{1/2}$ into $\frac{-5\sqrt{2}-6}{7}$
Jan 7, 2019
question
4
Simplify $\sqrt{\dfrac{\sqrt[3]{64} + \sqrt[4]{256}}{\sqrt{64}+\sqrt{256}}}$ into $\dfrac{\sqrt{3}}{3}$
Jan 9, 2019
question
4
If the probability of a dog barking one or more times in a given hour is 84%, then what is the probability of a dog barking in 30 minutes?
Apr 19, 2019
question
3
Why does $a^{\log_a(x)}=x$?
Dec 4, 2020
question
3
Write the polynomial of degree $4$ with $x$ intercepts of $(\frac{1}{2},0), (6,0)$ and $(-2,0)$ and $y$ intercept of $(0,18)$.
Jul 28, 2020
question
3
Trying to simplify $\frac{\sqrt{8}}{1-\sqrt{3x}}$ to be $\frac{2\sqrt{2}+2\sqrt{6x}}{1-3x}$
Jan 5, 2019
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180
How to subtract 30 days from the current datetime in mysql?
91
Mac install and open mysql using terminal
87
Inconsistent behaviour with tm_map transformation functions when using multiple cores
74
NameError: name 'datetime' is not defined
64
Can I use an attribute selector for CONTAINS in queryselector()?