#1
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#2
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ãËé $z = x^{y^2} \Rightarrow \ln z = y^2 \ln x$
¨Ò¡¹Ñé¹ãªéÊٵôԿ¼Å¤Ù³àŤÃѺ ¹èҨлÃÐÁÒ³¹Õé |
#3
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à¤Ã×èͧÁ×ͧ͢ËÑÇ¢éÍ | ¤é¹ËÒã¹ËÑÇ¢é͹Õé |
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