The number of zeroes of a polynomial is determined by the number of times it intersects the x-axis. Here, the polynomial intersects the x-axis at two points, which means it has 2 zeroes.
The number of zeroes of a polynomial \( y = p(x) \) as shown below is:
In the circuit below, \( M_1 \) is an ideal AC voltmeter and \( M_2 \) is an ideal AC ammeter. The source voltage (in Volts) is \( v_s(t) = 100 \cos(200t) \). What should be the value of the variable capacitor \( C \) such that the RMS readings on \( M_1 \) and \( M_2 \) are 25 V and 5 A, respectively?
Case | Mirror | Focal Length (cm) | Object Distance (cm) |
---|---|---|---|
1 | A | 20 | 45 |
2 | B | 15 | 30 |
3 | C | 30 | 20 |