Current location - Training Enrollment Network - Mathematics courses - Mathematical thinking gymnastics
Mathematical thinking gymnastics
1. Let the height of the triangle entering the square 3S be x..

When t=3 seconds, 3/4=X/4 and X=3.

S= 1/2*3*3=9/2

2.s = 1/2 * 4 * 4+ 1/2 *(3+4)* 1 = 1 1.5

3. Is t greater than or equal to 1S and less than or equal to 8S?

When t is greater than or equal to 1 and less than or equal to 4S, S= 1/2*t squared.

When t is greater than 4S and less than 5S, s =1/2 * 4 * 4+1/2 * [4-(t-4)+4] * (t-4) = 8+1/2 * (t-4) *

When t is greater than 5S and less than 8S, s =1/2 * (t-4) * (12-t)+1/2 * (t-5+4) [4-(t-5)] =/kloc-0.