1 math symbols数学符号
h>#include math.h>#include stdlib.h>#define pi 3.
二,梯度下降算法直观理解而想要优化参数\boldsymbolθ,就可以使用
widehat{\boldsymbol{u}}|\ \cos (\theta)\widehat{\boldsymbol{u}
x}\vartheta\left(\frac xp\right)\log p=2x\log x \mathcal o(x)结
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