首页
试卷库
试题库
当前位置:
X题卡
>
所有题目
>
题目详情
规定一种新运算:a*b=,则2*3= .
查看本题答案
包含此试题的试卷
教案备课库《七年级上数学第六周周考试题》真题及答案
点击查看
你可能感兴趣的试题
.规定一种新运算如则=.
若规定a*b为一种新运算且a*b=ab﹣a+b则﹣3*2=.
若新规定这样一种运算法则a※b=a2+2ab例如3※-2=32+2×3×-2=-3.1试求-2※3的
定义一种新运算a⊗b=a3﹣ab如1⊗2=13﹣1×2=﹣1则﹣2⊗3=_____
定义一种新运算a※b=ab+a+b若3※x=27则x的值是.
用符号※定义一种新运算a※b=ab+2a-b若3※x=0则x的值为__________.
定义一种新的运算ab=ab如23=23=8那么请试求322=__________.
定义一种新运算a⊗b=b2﹣ab如1⊗2=22﹣1×2=2则﹣1⊗2⊗3=.
现规定一种运算a*b=ab+a-b其中ab为实数则a*b+b-a*b等于
用☆定义一种新运算对于任意有理数ab都有a☆b=ab+a2则﹣3☆2=
对有理数ab规定一种新运算※意义是a※b=ab+a+b则方程x※3=4的解是x=.
定义一种新运算a⊗b=b2-ab如1⊗2=22-1×2=2则-1⊗2⊗3=.
规定一种新的运算a*b=ab+a+b+1则﹣3*4=.
规定⊗是一种新的运算符号且a⊗b=a2﹣ab+a则根据此规定2⊗3的值为__________.
定义一种新运算a⊗b=b2﹣ab如1⊗2=22﹣1×2=2则﹣1⊗2⊗3=
规定一种新的运算a△b=ab-a-b+1如3△4=3×4-3-4+1=6试求-5△4的值.
.abcd为实数现规定一种新的运算=ad-bc那么当=18时x=__________.
规定一种运算a*b=ab+a﹣b其中a和b是有理数那么﹣3*5的值为
7
﹣23
﹣17
﹣13
a※b是新规定的一种运算法则a※b=a2+2ab-1若-2※3=x则x=.
*是新规定的这样一种运算法则a*b=a2﹣2ab比如3*﹣2=32﹣2×3×﹣2=211试求﹣2*3
热门试题
更多
Hedidn'ttheeventsonobodyknewwhathadhappened.A.Mention B.recognize C.except D.develop
Ifyouwanttobeapianoyoumustpracticeharder.
ManyofLuXun’sworkswereintoforeignlanguages.A.controlled B.translated C.depended D.imagined
Thewhitebuildingwasonceusedasahomefortheruleofthearea.
一次函数y=6-3mx+2n-4不经过第三象限则mn的范围是.
I'mgoingtobeaneandbuildtallbuildings.
Theboyistalentedinactingsohecanbeanainthefuture.
Thebusdriveleaveshomeforworkearlyinthemorning.
如图直线y=kx+b经过A-2-1和B-30两点则不等式x<kx+b<0的解集为.
Itisreallymypleasetohaveachancetoworkwithyou.
—ThanksforlisteningtomyproblemandgivingmeyouradviceAmy.—.That’swhatfriendsarefor.A.Mypleasure B.Itdoesn'tmatter C.Nevermind D.It’sniceofyou
ThedeathoftheemperorKangxiamystery.A.gives B.remains C.finds D.continues
IamgoingtobeanactresswhenIfinishcollege.
把函数y=3x+1的图像向右平移2个单位再向上平移3个单位可得到的图像表示的函数是.
当m时y=m-3x2m+1+4x-5是一次函数
已知直线y=kx+b经过第一二四象限那么直线y=-bx+k经过第象限.
Thereisastrangeintheroom.Ican’tstandit.A.smell B.taste C.smile D.voice
Wegrowalotofvegetableslastspring.
LionelMessiisaveryfamoussoccerp.
ErquanYnigyuewasplayedbyamusicinstrument—theerhu.
Thereisnodthatsmartmobilephonesplayanimportantroleinourdailylife.
BobDylanisfamoussingingandwritingandhewontheNobelPrizethisyear.A.as B.like C.for D.to
He'sgoingtoanengineerwhenheup.A.do;grow B.do;grows C.be;grow D.be;grows
IlearnedfromtheInternetthattheHYDwasaindevelopingelectriccarsinChina.A.teacher B.follower C.stranger D.pioneer
Theboyburnthishandwhenhewasboileggs.
—Yoursonusedtobeahomebodybuthenowlikesoutdooractivities.Howdidyoudothat?—Itriedmanywaysoverandoveragain.Imadeit.A.Next B.Then C.Finally D.Suddenly
Whenwegottheresuddenitbegantorainheavily.
已知直线y=kx+b的图象如图所示点A03点B15.1求k和b的值2请直接写出不等式或不等式的解集①kx+b>3②kx+b>5
Themobilephonehasinfluencedpeople'slifealotsinceit.A.invents B.invented C.isinvented D.wasinvented
Hehopestobeacomputerpbecauseheisgoodatcomputerscience.
热门题库
更多
教案备课库
教案备课库
教案备课库
高一下学期数学
教案备课库
高一上学期数学
高一上学期化学
教案备课库
教案备课库
教案备课库
高一上学期物理
教案备课库
教案备课库
教案备课库
教案备课库
教案备课库