As night falls, the hustle and bustle of the city is engulfed in thick darkness, boundless.
"Brother Murong."
No answer. Murong Brother squinted out the window, his eyes looking hollow. Maybe I didn't hear, maybe I was in a daze, in short, it was quiet, as if nothing had happened.
"Brother Murong!" I broke the silence again.
Still no response. He seemed thoughtful. A person immersed in his own world does not want to be disturbed. Everyone will have those secretive pasts, and everyone will have attachments.
It seems that whatever the reason, I am not calling it at the right time. But I still want to try. I pushed him over the shoulder and hugged the pipa half-covered.
Brother Murong panicked, but immediately returned to nature, and everything was handled handily. Before I could speak, he asked quietly, "Why do you feel the same way on the same night?" ”
I was speechless. However, he felt that his question was very meaningful, so he gave up his resentment. Mathematics is inherently boring, so occasionally it allows for carelessness. Wouldn't it be a sin to delay a poet?
This is a fixed-value problem, and of course a fixed-point problem. Fixed-points seem to be more appropriate than fixed-value, and who makes fixed-points convenient for solving problems. Straight line over the fixed point has long been a common thing, the method of solving the problem is naturally handy.
So what point will the straight-line mn pass?
Right focus, of course, no doubt.
Are you sure?
Ironclad. You think this is blind guessing? Don't you look at what triangle is this? You think this point will be unpredictable?
Of course, maybe it doesn't matter if the straight line is too fixed or not, we still have the last trick. "Strong calculation" is something that no one can avoid, but if you still have courage, you will definitely spare no effort.
Method 1, first guess the straight line over the fixed point, a bit preconceived meaning. With this as a general method, you will be full of doubts.
Straight line over fixed point is an implicit condition, but it is not a stroke of Genius. I know that no amount of truth can convince you, so it is better to skip it and continue with Law 2.
Law 2, it seems that the straight line over the fixed point or not, does not matter. The whole process is not skilled except for counting, or counting. However, if you peel back the cocoon and choose the words carefully, the "focus radius" is an injury that cannot be circumvented.
Yes, I used it. Don't make a fuss, it's just a pretense, nothing more than to echo the crosshairs in the stem. Even if we abandon it like a, there is still a distance between two points. I always leave room for myself not to embarrass myself.
Method 4, curve system equation. The high-level solution can be described as fascinating.
There are many things that go out of the ordinary, and if there is no special preference, it is better to give up.
A person who doesn't even have a preference, how boring!
Having preferences is not necessarily interesting, and preferences are not about being unable to live with themselves.
It is not deliberately unable to live with yourself, obsessive-compulsive disorder makes the body involuntarily. There is no need to simplify the curve system equation, there is neither a cross term nor a primary term in the ellipse, so it is possible to make the coefficient of the two directly in the curve system equation 0. The process of simplification is heart-wrenching, especially for a person who is not confident in calculations, either frustrated or overwhelmed.
This topic is familiar, but at first sight. Yes, the 2020 college entrance examination mathematics national volume 1 has been tested. I don't care how the two are related. All I know is that keeping an eye on the college entrance examination is right.
The importance of the real questions of the college entrance examination is self-evident. Despite my relish and even chatter, I still couldn't dispel my doubts.
But you should always believe in yourself.