When k=___ The intersection of the line x-2y-2k and the line 2x-3y-k = 0 is on the curve X ^ 2 + y ^ 2 = 9

When k=___ The intersection of the line x-2y-2k and the line 2x-3y-k = 0 is on the curve X ^ 2 + y ^ 2 = 9


x-2y-2k=0,--->x-2y=2k.[1]
2x-3y-k=0,--->2x-3y=k.[2]
[2]-[1]*2:y=-3k
So: x = 2K + 2Y = - 4K
That is, the coordinates of the intersection point are: (- 3k, - 4K), which are substituted into the curve equation
9k^2+16k^2=9
k^2=9/25
k=±3/5



In the Miscellaneous Poems of Qinzhou, it is written that the perils of Qinzhou and the hardships of Gansu are as follows:


The whole poem is full of sorrow and trouble, making a long journey because of people. The poem is full of sorrow and trouble. It is full of vastness and sorrow. The night of fish and dragon falling in the water, the autumn of birds and mice in the mountains. The western expedition asks about the beacon fire, and the heart is broken. The poem of Taizhou zashi (1) the poem of "the late return to spend long and fear" shows that the poet is following



English translation
Don't copy that long appreciation. If you're going to vomit, just translate it


Mangmang mountains, isolated city valley. No storm, no moon
When is it too late to return to your country
There is no wind on the ground, clouds are surging out of the fortress, and the moonlight is shining on the border. How can the official not come back so late? The person who killed the head of Loulan has not come back. Seeing the spread of war and the scene of defeat, how can we not make people resentful and melancholy?



What kind of feelings does Qinzhou's miscellaneous poems reflect


Through the description of war, this poem shows the poet's patriotic feelings of worrying about the country and the people