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Pre Calculus
Some of my notes trying to stay fresh in calc
Question | Answer |
---|---|
Is this a function? {(1,2),(3,4),(6,5),(8,5)} | Yes it is, the range can be used more than once by a value from the domain. |
Is this a function. {(1,2), (3,4), (5,6), (5,8)} | No, the domain cannot be used more than once by a range value. |
f(x-3) The original function f(x)=x^2+x-5 | (x-3)^2 + (x+3)-5 =x^2-6x+9+x-3-5 =x^2-5x+1 |
f(x)-f(3) The original function f(x)=x^2+x-5 | =3^2+3-5 =9+3-5 =7 |
f(x)-3 The original function f(x)=x^2+x-5 | =x^2+x-5-3 =x^2+x-3 |