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Ian
Member Since February 8, 2009
About Ian:
Retired chap. Enjoys helping others with maths and physics.
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Recent Activity by Ian
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My Answers (490)
My Questions (5)
My Comments (6)
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I was Asked (1)
Commented:
About Ian's answer
It is energy not "Eenrgy" as you wrote and your "anyting" is spelt anything, and later you write atheim rather than atheism, but never mind that, it is easy to make typos. Also, this was supposed ...
Posted 4 years ago
Answered:
Why cant energy be created?
In the past people thought that if you burnt a fuel it disappeared, but as chemistry developed it was discovered that the total mass of gases and any residues was equal to the original mass of fuel ...
Posted 4 years ago
3 Comments
Last Comment
by
Ian
4 years ago
Answered:
Can someone show me how to work out the ...
As a fraction you just divide 261/1481 which as a decimal is 0.17623 Percentage means hundreths so there will be 100 times more of these, so as Mickey said you move the decimal two places to the ...
Posted 4 years ago
Answered:
Semiconductors
It depends a lot on how much you understand already. Class notes provided by your lecturer or his/her recommended textbook will be designed to match what you need to know. A library may be able to ...
Posted 4 years ago
Answered:
What is 20% off of 20$
20% off means you only pay the remaining 80%. Remember 80 percent means 80 hundreths or 80/100 which is 0.8 So, you only pay 0.8 *20 = $16 Some people prefer to remember that 20% off is 1/5th off ...
Posted 4 years ago
Answered:
Imaginary numbers
If you square a Real Number, whether negative or positive you always get a positive result, (or zero). By contrast, an Imaginary Number is defined as one that that when squared gives a negative ...
Posted 4 years ago
Helpful (1)
1 Comment
Last Comment
by
tony
4 years ago
Answered:
What is the rate in still water?
Right idea, tiny slip in arithmetic S - c = 63 S + c = 113 2S = 176 S = 88 c = 25 Regards - Ian
Posted 4 years ago
Answered:
Calculus 2 revolve 2 functions around x axis and ...
You did not quote range of integration Considering positive x from 0 to infinity Intersection at x = 2 and (theoretically) at x = 0 where functions tend to infinity Volume seen as ring or ...
Posted 4 years ago
Answered:
What is the product in math?
If you have two numbers, 5 and 7 say, their sum is 12 and their product is 35. So product means "the result when they are multiplied together" The product of 2, 3, and 5 is 2*3*5 = 30 Not to be ...
Posted 4 years ago
Answered:
Functional analysis
Functional analysis - what is it? Functional analysis is a branch of mathematics concerned with infinite-dimensional vector spaces (mainly function spaces) and mappings between them. The spaces may ...
Posted 4 years ago
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Topics of Interest
math
cosmology
algebra
calculus
mathematics
maths
functions
differentiation
integration
polynomials
complex numbers
science & mathematics
quantum physics (basic)
a level maths
pythagorean triples
maximum and minimum
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OronD
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"Ian You are doing a great job in Yedda. I see many of your math answers and you are always clear and accurate. Best personal regards, OronD. "
MackTheKnife
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"I really like your answers. They are very clear and well thought out. "
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