limx→π4(senx−cosxx−π4)\lim_{x\to\frac{\pi}{4}}\left(\frac{senx-cosx}{x-\frac{\pi}{4}}\right)x→4πlim(x−4πsenx−cosx)
(−2y)+(8x+5y)\left(-2y\right)+\left(8x+5y\right)(−2y)+(8x+5y)
2y⋅dxdy=x(x2−16)−122y\cdot\frac{dx}{dy}=x\left(x^2-16\right)^{-\frac{1}{2}}2y⋅dydx=x(x2−16)−21
−(m−34)-\left(m-34\right)−(m−34)
(k8)3\left(k^8\right)^3(k8)3
−3−(−2)−(−5)-3-\left(-2\right)-\left(-5\right)−3−(−2)−(−5)
(−80) : (−40)\left(-80\right)\::\:\left(-40\right)(−80):(−40)
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