a) px^2 + 3x + q=0 has roots
[((α+β)/(αβ))]× αβ
find p and q if
x^2 − 7x + 4 = 0 with real and
distinct roots has same roots..
b)if α and β are roots of
x^2 + kx +2k+8=0.
a) find k if one root is twice the other.
The resistance R of an
unknown resistor is found by
measuring the potential
difference V across the
resistor and the current I through
it and using the equation R=(V/I).
The voltmeter reading has a 3%
uncertainty and the ammeter
reading has a 2% uncertainty.
what is the uncertainty in the
calculated resistance?