tailieunhanh - On the study and difficulties of mathematics Augustus De Morgan

Chemical substances are often called 'pure' to set them apart from mixtures. A common example of a chemical substance is pure water; it has the same properties and the same ratio of hydrogen to oxygen whether it is isolated from a river or made in a laboratory. Other chemical substances commonly encountered in pure form are diamond (carbon), gold, table salt (sodium chloride) and refined sugar (sucrose). However, simple or seemingly pure substances found in nature can in fact be mixtures of chemical substances. For example, tap water may contain small amounts of dissolved sodium chloride and compounds containing iron,. | The Project Gutenberg EBook of On the study and difficulties of mathematic Augustus De Morgan This eBook is for the use of anyone anywhere at no cost and with almost no restrictions whatsoever. You may copy it give it away or re-use it under the terms of the Project Gutenberg License included with this eBook or online at license Title On the study and difficulties of mathematics Author Augustus De Morgan Release Date March 9 2012 EBook 39088 Language English Character set encoding ISO-8859-1 START OF THIS PROJECT GUTENBERG EBOOK STUDY OF MATHEMATICS Produced by Andrew D. Hwang transcriber s note The camera-quality files for this public-domain ebook may be downloaded gratis at ebooks 39088. This ebook was produced using scanned images and OCR text generously provided by the University of California at Berkeley through the Internet Archive. Punctuation in displayed equations has been regularized and clear typographical errors have been corrected. Aside from this every effort has been made to preserve the spelling punctuation and phrasing of the original. This PDF file is optimized for screen viewing but may be recompiled for printing. Please consult the preamble of the IATeX source file for instructions and other particulars. Copyright 1898. The Open Court Publishing .