# Question:using is() command to check if an emperical eq is true for the whole sequence

## Question:using is() command to check if an emperical eq is true for the whole sequence

Maple

Hi

When I try this maple retuurns FAIL and does not evaluate the expression.

```is(seq(tm[i] < (1/6)*Diameter[rør][i], i = 1 .. 17));
```

tm is numbers in mm and diameter is also numbers in mm

`Diameter[rør] := [273.05*Unit('mm'), 219.08*Unit('mm'), 168.28*Unit('mm'), 114.3*Unit('mm'), 273.05*Unit('mm'), 219.08*Unit('mm'), 1066.8*Unit('mm'), 60.33*Unit('mm'), 219.08*Unit('mm'), 168.28*Unit('mm'), 168.28*Unit('mm'), 141.3*Unit('mm'), 168.28*Unit('mm'), 114.3*Unit('mm'), 114.3*Unit('mm'), 168.28*Unit('mm'), 168.28*Unit('mm')]`
`tm := 8.982892831*Unit('mm'), 4.189790007*Unit('mm'), 3.913902969*Unit('mm'), 3.620745836*Unit('mm'), 4.482892831*Unit('mm'), 4.189790007*Unit('mm'), 8.793627806*Unit('mm'), 3.327643012*Unit('mm'), 4.189790007*Unit('mm'), 3.913902969*Unit('mm'), 3.913902969*Unit('mm'), 3.767378711*Unit('mm'), 3.913902969*Unit('mm'), 3.620745836*Unit('mm'), 3.620745836*Unit('mm'), 3.913902969*Unit('mm'), 3.913902969*Unit('mm')`