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英语翻译1) If x=sin 2 ,y =cos 2 ,find in terms of .2) Show that

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英语翻译
1) If x=sin 2 ,y =cos 2 ,find in terms of .
2) Show that the point P( ,)lies on the curve b x -a y =a b .
Show that the equation of the tangent to the curve at P is bx(t +1)-ay(t -1)=2abt.
The tangent cuts the x-axis at A and the y-axis at B.M is the mid-point of OA where O denotes the origin ,and H divides BM in the ratio 2:1 .Find the locus of H when t varies.
英语翻译1) If x=sin 2 ,y =cos 2 ,find in terms of .2) Show that
1 如果x=sin2 y=cos2 找出x y之间的关系
2证明 点P位于曲线线b x-a y= a b上
证明曲线在P点的切线方程是bx（t+1）-ay（t-1）=2abt
切线与X轴交A点,与Y轴交B点,O是原点,M是OA的中点,H分BM为2:1,找出H与t的函数关系.
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