limx→π2(cos(2x)x−π2)\lim_{x\to\frac{\pi}{2}}\left(\cos\left(2x\right)^{\frac{x-\pi}{2}}\right)x→2πlim(cos(2x)2x−π)
3x−4>2x+63x-4>2x+63x−4>2x+6
dydx(3cos(xy)=8x+5y)\frac{dy}{dx}\left(3cos\left(xy\right)=8x+5y\right)dxdy(3cos(xy)=8x+5y)
(75x2+18)(−75x2−18)\left(\frac{7}{5}x^2+\frac{1}{8}\right)\left(-\frac{7}{5}x^2-\frac{1}{8}\right)(57x2+81)(−57x2−81)
16a2+24ab+96b216a^2+24ab+96b^216a2+24ab+96b2
m4−10m2+25m^4-10m^2+25m4−10m2+25
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