When I was in middle school, I had a classmate who would look at trigonometric functions and yell, "I will never need these!" ...
Abstract: Nowadays, problems such as greenhouse effect and air pollution become increasingly prominent. The power generation process should pay attention to the fuel cost and reduce the pollution to ...
No. 3 May, 2010 pp. 1401-2180 No. 2 March, 2010 pp. 619-1400 No. 1 January, 2010 pp. 1-618 ...
Brain Station Advanced on MSNOpinion
Solve this geometry problem without using trigonometry
In this video, we solve a challenging geometry problem using pure logic, geometric reasoning, and smart observations—no ...
Ask the publishers to restore access to 500,000+ books. An icon used to represent a menu that can be toggled by interacting with this icon. A line drawing of the Internet Archive headquarters building ...
Can you chip in? As an independent nonprofit, the Internet Archive is fighting for universal access to quality information. We build and maintain all our own systems, but we don’t charge for access, ...
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