Friday

January 30, 2015

January 30, 2015

Posted by **Nik** on Friday, September 16, 2011 at 12:49am.

f(x)= {x−2x2−4 if x<2

ax2−bx−18 if 2< or =x<3

10x−a+b if x> or =3

- calculus -
**bobpursley**, Friday, September 16, 2011 at 7:26amlook at 2

x^2-2x-4=ax^2-bx-18

4-4-4=4a-2b-18

2a-b=-18 check that.

at x=3

ax^2-bx-18=10x-a+b

9a-3b-18=30-a+b

10a-4b=48

Now you have two equations, two unknowns, solve.

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