Y = f(x)
1) f(-1) = 4 - 0.5×(-1) = 4 + 0.5 = 4.5
f(0) = 4
f(1) = 3.5
f(2) = 3
2) f(-1) = 3×(-1) - 2 = -5
f(0) = -2
f(1) = 1
f(2) = 4
3) f(-1) = -1^2 + 1 = 1+1 = 2
f(0) = 1
f(1) = 1+1 = 2
f(2) = 4 + 1 = 5
4) f(-1) = 0.75
f(0) = 0.6
f(1) = 0.5
f(2) = 3/7
Rovnici lze řešit logaritmováním obou stran , tedy x. log 3 = log 4, x = log4/log3.
No a log4/log3 = Log 4 při základu 3.
А) (5a-b)*2=5a*2+7ab-b*2 b)(y+6)*2=(2y+6)*2+12=y*2+2y+24 c) (5a-2)*(5a+2)=5a*2-8 d)(x-0,6)*(0,6+x)=x*2-0,6*2=x*2-0,36