(2x2+7)2\left(2x^2+7\right)^2(2x2+7)2
1seca−1−1seca+1\frac{1}{\sec a-1}-\frac{1}{\sec a+1}seca−11−seca+11
4z+8z4z+8z4z+8z
x3y=2xx^3y=2xx3y=2x
2x+3>12(4x−8)+42x+3>\frac{1}{2}\left(4x-8\right)+42x+3>21(4x−8)+4
(1+x)dy−ydx=0 y(0)=e\left(1+x\right)dy-ydx=0\:\:\:\:\:\:\:\:\:\:\:y\left(0\right)=e(1+x)dy−ydx=0y(0)=e
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