Loading [MathJax]/jax/output/HTML-CSS/jax.js

網頁

2021年6月19日 星期六

93年大學指考(補考)-數學乙詳解

 九十三學年度指定科目考試

敏督利颱風受災地區考生補救考試-數學乙

一、單選題

解答{n=200μ=50cv=σ/μ=σ/50=0.1σ=5x=65xμ=6550=15=3σP(|xσ|3σ)=99.7%0.15%,0.0015×200=0.3(1)
解答h90+h150+h=6090+hh2+120h900=0h=120+6052h7.1(4)
解答

L:y=ax,a>0{f(x)=2x2=axg(x)=3x2=ax{x(2xa)=0x(3xa)=0{x=a/2x=a/3{A(a/3,a2/3)B(a/2,a2/2)¯OB¯OA=¯OB¯OA=a/2a/3=1.5(3)

二、多選題

解答(x4)(x6)(x8)+(x5)(x7)(x9)=0{{(x4)(x6)(x8)>0(x5)(x7)(x9)<0{(x4)(x6)(x8)<0(x5)(x7)(x9)>0{{x>84<x<67<x<9x<58<x<94<x<5{6<x<8x<4x>95<x<76<x<74<x<56<x<78<x<9(135)
解答(1)log(1+9%)72/9=8log1.09=8×0.0374=0.2992<log2(2)log(1+8%)72/8=9log1.08=9×0.0334=0.3006<log2(3)log(1+6%)72/6=12log1.06=12×0.0253=0.3036>log2(4)log(1+4%)72/4=18log1.04=18×0.017=0.306>log2(5)log(1+3%)72/3=24log1.03=24×0.0128=0.3072>log2(345)
解答36015=24x24xrsin(24x90)+r+2=20sin(24x90)+22asin(bx+c)+d{a=20b=24=2π15c=90d=22,(13)

三、選填題

解答=1.1×5%:1×0.3%=1.1×5%0.3%:118.3:118:1
解答|23157112k|=k4=0k=4
解答11C105=25225211=250
解答

{A(0,0)B(2,1)C(3,0)D(a,0)E(a+b,0){AB:x=2yBC:x=3y{G(a,a/2)F(a+b,3ab){GFyEFx{a/2=3ab3ab=b{a=3/2b=3/4=b2=916
解答

{¯AA1=a¯A1B1=b{¯A1B=¯AC1=¯B1C=9a¯B1C1=¯C1A1=aAA1C1cosA=cos60=12=a2+81a2b218a2b=73a¯A1B1¯AB=ba=73a10a=7310
解答
(1)N=10k+5N2=100k2+100k+25=100(k2+k)+25{=k2+k=25(2)N2=100(k2+k)+25N2k2+k{kk2k2+k=+=kk2k2+k=+=k2+kN2

解答
(1)d=α+β20=α+β(2){d=α+β=0.7d=α+β22=d+0.9{α+β=0.7α+4β=1.6{α=0.4β=0.3(3)d=α+β21=0.4+0.3×2=1
============================== end ====================================
解題僅供參考,其他指考試題及詳解

沒有留言:

張貼留言