求 log((sin(5))^2)-3+pi

求 log((sin(5))^2)-3+pi log((sin(5))^2)-3+pi=? 求等式log(2)3*log(3)4*log（4)5*log(5)6*log(6)7*log(7)m=log(3)9时m的值? 用C语言计算log(5)log(3)-log(2))/sin(π/3)=#include #includeint main(){int a=5,b=3,c=2;double y;y=(log(a)log(b)-log(c))/sin(π/b);printf((log(5)log(3)-log(2))/sin(π/3)=%ld,y);return 0;}x这哪里错了? log((sin(5))^2)-3+pi等于多少? log((sin(30)*2)-3+π是多少 log((sin(30))^2)-3+pi= log((sin(30))*2)-3+π log((sin(30))*2)-3+π 已知sin( α+ β)=1/2,sin(α - β)=1/3,求下列两式的值:log根号5（tanα .cotβ ). 已知log（14）7=a log(14)5=b 用ab表示log(35)70=log(3)4*log(4)8*log(8)m=log(4)2 求m 求大神指点,lingo出现错误代码11,这是为什么?model:!目标函数;min=(0.005*((@log(1+k))^2+(@log(1+2*k))^2+(@log(1+3*k))^2+(@log(1+4*k))^2+(@log(1+5*k))^2))!/(@log(1+k)+@log(1+2*k)+@log(1+3*k)+@log(1+4*k)+@log(1+5*k));!约束条件;(@log 已知sin(α+β)=1/2 sin(α—β)=1/3,求log(√5)(tanα/tanβ)已知sin(α+β)=1/2sin(α—β)=1/3,求log(√5)[(tanα/tanβ)^2] 用换底公式求log（2）25乘log（3）4乘log（5）9的值 1.化简：（1-sin^6α -cos^6α)/(1-sin^4α -cos^4α)2.α为三角形内角,lg(sinα + cosα)=1/2lg5 -lg3,求sinα - cosα,tanα的值.3.已知：log(tanα)(cosα)=2/3 (0＜α＜π/2),求证:log(1+cot^2α)(sinα*cosα)=-7/10.4.已知：5sinβ=sin（ 若sinα-cosα=-1/5,α∈(3/2π,7/4π),求sinα与cosα 若sin（α+β）=1/2,sin(α-β)=1/3,求log√5（ta若sinα-cosα=-1/5,α∈(3/2π,7/4π),求sinα与cosα 若sin（α+β）=1/2,sin(α-β)=1/3,求log√5（tan*cotβ）若sinα-2cosα/3sinα+5 Log(2)1/25•log(3)1/8•log(5)1/9化简 还有已知log(18)9=a,log(18)5=b求log(36)45 值 求(lg2)^2+lg2lg5+log(3)5/log(3)10值 注：log（3）5是log以3为底