Question

Дана функция y=5 x+ 20 на отрезке от 1 до 10 найти количество отрицательных значений функций.

Answer 1

Var x, k : integer;
Begin
  for x := 1 to 10 do
     if 5*x+20 < 0 then
       k := k + 1;
  writeln(k);
End.

а вообще при положительном х функция всегда будет положительная, глупое условие

Answer 2

Calculating the Number of Negative Values in a Function

To find the number of negative values of the function \( y = 5 + x + 20 \) on the interval from 1 to 10, we can first calculate the function values for \( x = 1, 2, 3, ..., 10 \), and then count the number of negative values.

Let's calculate the function values for \( x = 1, 2, 3, ..., 10 \):

For \( x = 1 \): \[ y = 5 + 1 + 20 = 26 \]

For \( x = 2 \): \[ y = 5 + 2 + 20 = 27 \]

For \( x = 3 \): \[ y = 5 + 3 + 20 = 28 \]

For \( x = 4 \): \[ y = 5 + 4 + 20 = 29 \]

For \( x = 5 \): \[ y = 5 + 5 + 20 = 30 \]

For \( x = 6 \): \[ y = 5 + 6 + 20 = 31 \]

For \( x = 7 \): \[ y = 5 + 7 + 20 = 32 \]

For \( x = 8 \): \[ y = 5 + 8 + 20 = 33 \]

For \( x = 9 \): \[ y = 5 + 9 + 20 = 34 \]

For \( x = 10 \): \[ y = 5 + 10 + 20 = 35 \]

Now, let's count the number of negative values. From the calculations, we can see that there are no negative values of the function \( y = 5 + x + 20 \) on the interval from 1 to 10.

This means that the function \( y = 5 + x + 20 \) does not produce any negative values within the given interval.