林泓儒的部落格

1.

X為正 => 1>x^2

設x=1/2

X為負 => 1<x^2(不合理)

2.

(35*24.2+25*27.6)/60=25.616

3.

Median 0

Mean 0

4.

X=3 0

5.

7*6=42

6.

B:190-31=159

A:80y^2

Y=1 =>80

Y=2 =>320

7.

n/11=?......5

7n/11=?.......2

N=16  27

  112  189

8.

((N+1850)/n)*d

9.

-5<=x<=5

-5*5*4*3=-300

10.

C=>2*r*pi

S=>4a

2rpi=4a

r^2*pi=z

a^2=?

R=sqrt(z/pi)

2*sqrt(z/pi)*pi=4a

A^2=1/4*(z/pi)

11.

22=2*11

K=2*11*13*3

78

12.

1a*3a*5a=15a^3

15a^3=405

A=3

3 9 15

27*2+45*2+135*2=414

13.

2r^2=x^2

R=x/sqrt(2)

Small=>(x^2/2)*pi

14.

281000/580480=0.484

15.

(85300(acres)*43560)/(5280)^2

16.

953x+1332y/953+1332

17.

A => 92.8-51.6=41.2

C =>需要每筆資料

D =>72.5*120

18.

(x-4)(x-14)=0

X=4  14

4+14=18

18/2=9

19.

42+15-20+10=47

20.

Y=3x+2

X 1 2 3 ……….

Y 5 8 11 14 17 20 23