小学数学前置性作业

如图,如果函数y=-x与y=-4/x的图像交与A,B两点,过点A作AC垂直于y轴,垂足为点C,求三角形ABC的面积 如果函数y=-x与y=-x分之4的图像交于点A,B两点,过点A作AC垂直于y轴,垂足为c求三角形BOC面积 如果函数Y=-X与Y=-4/X的图像交于A.B两点,过点A做AC垂直于Y轴,垂足为C,则△BOC的面积为? 急.如果a*a-ab=9,ab-b*b=4.求a*a-b*b和a*a-2ab+b*b的值 求函数f(x)=2x⁴+3x²定义域 函数f(x)=√-x/2x²-3x-2的定义域为? she is ,____one of the most popular teachers in our school.A.perhaps B.maybe C.may be D.probably抄袭的答案就不用回了请务必解释为什么 A可以吗 若关于X的方程9X—7=AX+10有整数解,则满足条件的整数A为? She is,------,one of the most popular teachers in our school.A.perhaps B.maybe C.may be D.probabl为什么答案是A呢? She is one of the most popular teachers in her school.翻译一下 popular,the man,the,one,is,of,most,teachers,in our school （连词成句） Miss Zhao is one of（ ）{popular} teacher in our school. 完形填空 Miss Zhao is one of the most popular teachers in the school.Today she comes into the (1).With a big smile on her face ,she says to her (2)that she is (3)to see they did well in the sports meeting .But(4)is not pleased to see the classro miss gao is one of ( )in our school A most popular teacher B more popular teachers C the mostpopular teacher D the most popular teachers (解析） lots of fish in this river ( )because of the dirty water A is dead B is dying C have dive D has to be 函数y=2x³-3x²+5的导数y'为什么等于6x²-6x 而不是4x²-6x?求具体过程, 求f（x）=1/3x³＋1/2﹙1－2a﹚x²－2ax＋1的导数 She _____ in a school Marry is ______.She______in a school.A.a student,studies B.a teacher,work she finds a j___ in a school 会么 She teaches( Maths) in a school(对括号里的部分提问) She studies in a school. She is ?. 已知方程10x=10-x,lgx+x=10的实数解分别是α、β则α+β的值?要有图像的解析. 现规定一种运算:a*b=a+(b-a),其中ab为实数,则a*b+(b-a)*b等于什么? 已知y与2x+1成正比例,且当x=-1时,y=2.求y与x的函数解析式 2013年太阳风暴对中国影响大不大谁要是知道说 根据下列条件分别确定函数y=kx+b的解析式：1、y与x成正比例,当x=5时,y=6; 2、直线y=kx+b经过点(3,6)与点(1\2,—1\2). 已知y-1与2x+3成正比例,如果当x=-（5/3）,y=0时,求y关于x的函数解析式 确定函数y=kx+b的解析式.y与x成正比例,x=5,y=6. y=kx+b中,k扩大,函数图像怎么变化能不能详细点例如y=2x+5k扩大两倍在函数上的点（1.5,8）怎么变化？ 已知直线y=kx+b与直线y=3x-2平行,且经过点（6,4）,试确定该函数解析式., 若y关于x的函数解析式为y=kx－9,当x=3时,函数值为6,则当x=－3时函数值为（ ）A.－6 B.－12 C.－24 D.－36 x(30-x)=200