4a^2k^2-(a^2+4)k+1 怎么得(4k-1)(a^2k-1)=0

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化简:k-1/k²-4k+4÷1-k/k²-4的结果是( ) A、2-k/k+2 B、k+2/k-2 C、k+2/2-k D、k-2/k+2 [k*(2-4k)/(1+2k)]+2k+1 (4k^2+7k)+(-k^2+3k-1) 集合A={k平方-k,2k}.K=? (k*k*k-2k+4)/4k S(k+1)=Sk+a(k+1)=2k/(k+1) +a(k+1)=(k+1)²a(k+1)[(k+1)²-1]a(k+1)=2k/(k+1)(k+2)ka(k+1)=2k/(k+1)a(k+1)=2/[(k+1)(k+2)] 怎么得的 排列组合:A(8)/(k)=k*(k-1)*(k-2)*...*8*7K=?A(8)/(K) 是从k个值里选8个k=14? SET TALK OFFSET TALK OFFSET TALK OFFSET TALK OFFCLEARDIMENSION A(5)FOR K=1 TO 4A(K)=15-K*KENDFORK=3DO WHILE K>=1A(K)=A(K)-A(K+1)K=K-1ENDDOA(1),A(2),A(3),A(4),A(5)SET TALK ONRETURN    运行结果是: int a=0,b=4,k=2;k=a+1>0||(++a matlab subs如何用在解一个模型,其中:Qd=(-2*x-2*wd+2*a-a*k+y*k+wf*k+td*k)/(4*b-2*b*k^2)现在求出来x = 1/2*(48*a+32*k+16*wd-16*cdu-4*wf*k-4*td*k-12*a*k-10*a*k^2+td*k^3-8*k^3+4*k^2*cdu-4*k*cfu+cfu*k^3+3*a*k^3-6*wd*k^2+wf*k^3)/(5*k^2-16)y 4a^2k^2-(a^2+4)k+1 怎么得(4k-1)(a^2k-1)=0 下列终边相同的角是【选择题.】A.kπ+π/2与k*90°,k∈ZB.(2k+1)π与(4k±1)π,k∈ZC.kπ+π/6与2kπ±π/6,k∈ZD.(kπ)/3与kπ+(π/3),k∈Z 如何将matlab中for循环嵌套去掉,这个能不能去掉for k=1:2048L(k)=fix(p3(1)*k^9+p3(2)*k^8+p3(3)*k^7+p3(4)*k^6+p3(5)*k^5+p3(6)*k^4+p3(7)*k^3+p3(8)*k^2+p3(9)*k+p3(10));a(k)=L(k)-512;for i=1:1024if i+a0J(2049-k,i)=I(2049-k,i+a);endendend lim1/(n^k)[1+4+……+(3n-2)]=A,求A,k 已知a向量b向量为单位向量若a点乘b=(1+4k^2)/4k(k>0)则k=? 已知U={x|x=2k+1,k属于z},A={x|x=4k-1,k属于z},则A的补集是 A={X|X=2K+1,k是整数},B={X|4K±1,K是整数},则A B的关系是什么? 角a满足sina=(k-3)/(K+5) cosa=(4-2k)/(k+5) 则tana=