Topic: first list of topics
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9 items are filed under this topic.

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	On what day of the week did 1994 begin?		2015-04-05
		From tayyaba: there were 365 days in the year 1993 the first day of the year was friday. on what day of the week did 1994 begin? Answered by Penny Nom.
	The derivative of sin(x)		2014-04-26
		From Lucky: f(x)=Sin(x), by first principle its f'(x)...show me how to solve such problem. Answered by Penny Nom.
	Cumulative Frequency Math Question		2013-03-20
		From Primadonna: Hi, Please help me solve this question. Thank you so much. The cumulative frequency table below shows the length of time that 30 students spent text messaging on a weekend. Minutes Used Cumulative Frequency 31-40 2 31-50 5 31-60 10 31-70 19 31-80 30 Which 10-minute interval contains the first quartile? (1) 31–40 (2) 41–50 (3) 51–60 (4) 61–70 Answered by Penny Nom.
	The derivative of x^-(1/2)		2012-01-14
		From Eric: I have an problem figuring out the derivative of the negative square root of x i.e. x^-(1/2) using the first principle. Could someone please show me? Thanks in advance! Answered by Harley Weston.
	Solving arithmetic problems in the right order (BEDMAS)		2007-10-05
		From Kim: 3+4x2-(10 divided by 5)= what? Answered by Penny Nom.
	Differentiate x^(1/3) using first principles		2007-09-14
		From Sheila: our teacher gave us this question as a challenge and even he couldnt figure it out: Differentiate x^(1/3) [aka the cube root of x] using first principles. i know the answer is 1/(3.x^2/3), but how is it possible using first principles? Answered by Harley Weston.
	Two sequences that agree in the first 4 terms		2003-05-26
		From A student: Is it possible to have two formulas that define sequences that agree on the first four terms but not the rest? Answered by Penny Nom.
	Sequences that agree on their first four terms		2002-05-16
		From Mike: Are there two formulas that define sequences that agree on their first four terms, but differ on the fifth term and all succeeding terms? Answered by Chris Fisher.
	zero		2000-01-01
		From Jason: What civilization first used zero? Answered by Penny Nom.

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