第十六章 三角函数和等差数列

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重要:首先
    actor/*kt*/n.男演员:行动者
    ……
    testout考验
    theotherday不久前的一天
    ……
    一共不到4000个单词。
    ——
    物理:
    【开普勒第三定律公式】:
    a/T=k
    ……
    F=kq1q2/r2
    ……
    【库仑定律公式】:
    F=k*(q1*q2)/r^2(k=1/4πε0)
    适用条件:真空中(空气中也可近似应用),或静止的点电荷
    ……
    机械振动
    简谐运动的回复力:F=-kx
    回复力:F=-kx与加速度a=-k/m·x是简谐运动的动力学特征和运动学特征,常用来证明某个震动为简谐运动。
    ……
    机械波
    ……
    光的反射和折射。
    光的干涉
    ……
    电磁波
    波的形成和传播。
    ……
    ——
    化学
    物质的组成、性质和分类
    ……
    离子反应
    判断粒子共存问题。
    1看离子共存的限制条件
    限制溶液为无色,排除具有颜色的Fe3+(黄色),Fe2+(浅绿色),Cu2+(蓝色或绿色),MnO-4(紫色)。
    ……
    氧化还原反应
    1判断氧化性、还原性的强弱。
    2判断氧化还原反应能否发生:
    满足“两强生弱”的规律。
    主语先后顺序,几个氧化还原反应均可能发生时,氧化性、还原性强的粒子优先反应:
    如Cl2通入Fel2溶解中,Cl2先氧化l-,再氧化Fe2+。
    ……
    元素周期律
    元素周期表:氢氦锂铍硼……
    那套化学老师教的“顺口溜”。
    ……
    ——
    生物
    【生殖隔离:指不同种群的个体不能自由交配或交配后产生不可育的后代。】
    ……
    基因自由组合定律
    思路:“先分开、再组合”(即一对性状一对性状计算,然后再相乘)
    如AaBb×AaBb1)后代基因型种类:3×3-9种
    2)表现型种类:2×2=4种3)后代出现AABb的概率:1/4×1/2-1/8
    4)后代出现显性显性(A_B_)的概率:3/4×3/4=9/16
    ……
    【生物多样性包括:基因多样性、物种多样性和生态系统多样性三个层次。】
    ……
    伴性遗传基因型的写法
    先写出染色体,男性XY,女性XX,再在性染色体的右上角写上基因
    ……
    【伴X隐性遗传的特点】:
    ①男性患者多于女性患者
    ②隔代遗传,交叉遗传
    ③母病子必病,女病父必病
    ……
    一整天,齐羡都在家里复习知识点。
    因为拥有过目不忘,所有知识点只看过一遍以后,便都永久的印在了脑海之中。
    原本齐羡等到晚上10点,就会迫使自己停止了学习,休息睡觉。
    但一用过目不忘记忆起这些高中各科知识点,便一发不可收拾。
    因为太入迷投入,不容易分神,到了凌晨3点,齐羡感觉沉浸在知识的海洋中还意犹未尽。
    到了第二天清晨7点,齐羡就又早早醒来,继续学习。
    又是一整天。
    到了第三天的凌晨4点。
    齐羡才将6科的知识点、课本上的所有题型、辅助教材上强调的考点和易错点,都一股脑统统背诵了一遍。
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