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其他解决方法
扩展乘法的导数。
ddx[4x55x43x2]=ddx[4]×x55x43x2+4×ddx[x55]×x43x2+4x55×ddx[x43]×x2+4x55x43×ddx[x2]
乘法可以以不同的方式分组,但结果仍然相同。
ddx[4x55x43x2]=ddx[4×(x55x43x2)]
应用导数的乘法规则。
ddx[4×(x55x43x2)]=ddx[4]×(x55x43x2)+4×ddx[x55x43x2]
ddx[4]×(x55x43x2)+4×ddx[x55x43x2]=ddx[4]×(x55x43x2)+4(ddx[x55]×x43x2+x55×ddx[x43]×x2+x55x43×ddx[x2])
ddx[x55x43x2]=ddx[x55×(x43x2)]
ddx[x55×(x43x2)]=ddx[x55]×(x43x2)+x55×ddx[x43x2]
ddx[x43x2]=ddx[x43]×x2+x43×ddx[x2]
ddx[x55]×(x43x2)+x55(ddx[x43]×x2+x43×ddx[x2])=ddx[x55]×x43x2+x55(ddx[x43]×x2+x43×ddx[x2])
可以通过分别乘以每个数,然后再加或减结果,来乘以两个数的和或差。
ddx[x55]×x43x2+x55(ddx[x43]×x2+x43×ddx[x2])=ddx[x55]×x43x2+(x55×(ddx[x43]×x2)+x55×(x43×ddx[x2]))
ddx[x55]×x43x2+(x55×(ddx[x43]×x2)+x55×(x43×ddx[x2]))=ddx[x55]×x43x2+(x55×ddx[x43]×x2+x55×(x43×ddx[x2]))
ddx[x55]×x43x2+(x55×ddx[x43]×x2+x55×(x43×ddx[x2]))=ddx[x55]×x43x2+(x55×ddx[x43]×x2+x55x43×ddx[x2])
加法可以以不同的方式分组,但结果仍然相同。
ddx[x55]×x43x2+(x55×ddx[x43]×x2+x55x43×ddx[x2])=ddx[x55]×x43x2+x55×ddx[x43]×x2+x55x43×ddx[x2]
ddx[4]×(x55x43x2)+4(ddx[x55]×x43x2+x55×ddx[x43]×x2+x55x43×ddx[x2])=ddx[4]×x55x43x2+4(ddx[x55]×x43x2+x55×ddx[x43]×x2+x55x43×ddx[x2])
ddx[4]×x55x43x2+4(ddx[x55]×x43x2+x55×ddx[x43]×x2+x55x43×ddx[x2])=ddx[4]×x55x43x2+(4×(ddx[x55]×x43x2)+4×(x55×ddx[x43]×x2)+4×(x55x43×ddx[x2]))
ddx[4]×x55x43x2+(4×(ddx[x55]×x43x2)+4×(x55×ddx[x43]×x2)+4×(x55x43×ddx[x2]))=ddx[4]×x55x43x2+(4×ddx[x55]×x43x2+4×(x55×ddx[x43]×x2)+4×(x55x43×ddx[x2]))
ddx[4]×x55x43x2+(4×ddx[x55]×x43x2+4×(x55×ddx[x43]×x2)+4×(x55x43×ddx[x2]))=ddx[4]×x55x43x2+(4×ddx[x55]×x43x2+4x55×ddx[x43]×x2+4×(x55x43×ddx[x2]))
ddx[4]×x55x43x2+(4×ddx[x55]×x43x2+4x55×ddx[x43]×x2+4×(x55x43×ddx[x2]))=ddx[4]×x55x43x2+(4×ddx[x55]×x43x2+4x55×ddx[x43]×x2+4x55x43×ddx[x2])
ddx[4]×x55x43x2+(4×ddx[x55]×x43x2+4x55×ddx[x43]×x2+4x55x43×ddx[x2])=ddx[4]×x55x43x2+4×ddx[x55]×x43x2+4x55×ddx[x43]×x2+4x55x43×ddx[x2]
常数的导数总是零。
ddx[4]×x55x43x2+4×ddx[x55]×x43x2+4x55×ddx[x43]×x2+4x55x43×ddx[x2]=0x55x43x2+4×ddx[x55]×x43x2+4x55×ddx[x43]×x2+4x55x43×ddx[x2]
计算x的n次幂的导数。
0x55x43x2+4×ddx[x55]×x43x2+4x55×ddx[x43]×x2+4x55x43×ddx[x2]=0x55x43x2+4×(55x55-1)×x43x2+4x55×ddx[x43]×x2+4x55x43×ddx[x2]
从一个数字中减去一。
0x55x43x2+4×(55x55-1)×x43x2+4x55×ddx[x43]×x2+4x55x43×ddx[x2]=0x55x43x2+4×(55x54)×x43x2+4x55×ddx[x43]×x2+4x55x43×ddx[x2]
0x55x43x2+4×(55x54)×x43x2+4x55×ddx[x43]×x2+4x55x43×ddx[x2]=0x55x43x2+4×(55x54)×x43x2+4x55×(43x43-1)×x2+4x55x43×ddx[x2]
0x55x43x2+4×(55x54)×x43x2+4x55×(43x43-1)×x2+4x55x43×ddx[x2]=0x55x43x2+4×(55x54)×x43x2+4x55×(43x42)×x2+4x55x43×ddx[x2]
0x55x43x2+4×(55x54)×x43x2+4x55×(43x42)×x2+4x55x43×ddx[x2]=0x55x43x2+4×(55x54)×x43x2+4x55×(43x42)×x2+4x55x43×(2x2-1)
0x55x43x2+4×(55x54)×x43x2+4x55×(43x42)×x2+4x55x43×(2x2-1)=0x55x43x2+4×(55x54)×x43x2+4x55×(43x42)×x2+4x55x43×(2x1)
任何数的一次方都等于该数本身。
0x55x43x2+4×(55x54)×x43x2+4x55×(43x42)×x2+4x55x43×(2x1)=0x55x43x2+4×(55x54)×x43x2+4x55×(43x42)×x2+4x55x43×(2x)
简化算术表达式。
0x55x43x2+4×(55x54)×x43x2+4x55×(43x42)×x2+4x55x43×(2x)=0+4×(55x54)×x43x2+4x55×(43x42)×x2+4x55x43×(2x)
一个数加零,其结果不变。
0+4×(55x54)×x43x2+4x55×(43x42)×x2+4x55x43×(2x)=4×(55x54)×x43x2+4x55×(43x42)×x2+4x55x43×(2x)
4×(55x54)×x43x2+4x55×(43x42)×x2+4x55x43×(2x)=4×(55x54)×x43x2+4x55×(43x42)×x2+8x99
4×(55x54)×x43x2+4x55×(43x42)×x2+8x99=220x99+4x55×(43x42)×x2+8x99
220x99+4x55×(43x42)×x2+8x99=220x99+172x99+8x99
220x99+172x99+8x99=400x99
我们做得怎么样?
是否想过如何预测未来?导数就是你的水晶球! 想象一下:你是一个想要捕捉最大浪的冲浪者。你如何知道它什么时候到来?导数可以告诉你什么时候它在最高点! 火箭科学:打算发射火箭去火星?导数告诉我们最佳的燃烧速率,以便最大限度地减少燃料消耗和增加距离! 股市:在股市交易吗?导数可以显示股票价格变化的速度,有助于预测最佳购买或销售时机。 动画:喜欢动画电影吗?艺术家们使用导数顺畅地改变角色的动作和表情,使他们感觉更像真实的生活。 工程学:正在设计一座桥或一座摩天大楼?导数可以帮助确定材料的应力和应变变化率,确保你的结构的安全。 简言之,导数就像是理解变化并在现实生活中做出预测的秘密代码。所以,我们一起来解开这个代码,成为我们未来的主人吧!