identify the vertex of the parabola
f(x)=-7^2 ?
Is it (-7,0).....
#2
the intensity of I light varies inversely as the sqiare of the distance D from the source. If the intensirty of illumination on a screen 5ft. from a light is 2 foot candles , what's the intensity on a screen 15 foot from the light?
Is the soultion 2/10 foot candle??
thankyou!!!
f(x)=-7^2 ?
Is it (-7,0).....
#2
the intensity of I light varies inversely as the sqiare of the distance D from the source. If the intensirty of illumination on a screen 5ft. from a light is 2 foot candles , what's the intensity on a screen 15 foot from the light?
Is the soultion 2/10 foot candle??
thankyou!!!