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                                                кристина0052368 
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                                            ![y'=tgx^{ctgx}\\ lny'=(ctgxlntgx)'\\ lny'= -\frac{1}{sin^2x}lntgx+ctgx \frac{1}{tgx} \frac{1}{cos^2x} \\ y'=tgx^{ctgx}[ -\frac{lntgx}{sin^2x}+ \frac{ctgx}{tgxcos^2x} ]](/tpl/images/0360/8296/db7e7.png) 
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