C

1003107904

Level: 
C
Solve the indefinite integral (abecbx2+5bsinc)db of a real-valued function, where x, a, c are real numbers.
0.5aecb2b22x2+5bln5bsinc+k, kR
0.5aecb2b22x33+5bln5bsinc+k, kR
aec2bx+5bsinc+k, kR
aecbx2+5bbsinc+k, kR

1003158507

Level: 
C
Let there be a row of five yellow cubes lying side by side. The first cube has an edge length of 100cm and each next cube has an edge length by 10cm shorter than the previous one. Let there be a second row of five blue cubes lying side by side. The first blue cube has an edge length of 100cm and each next cube has an edge length by 10% smaller than the previous one. What is the difference between the length of these two rows?
9.51cm
34.51cm
0cm
20cm
20.51cm