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Išspręskite lygtį $lg(x+0.2)-1$ = 0

Sprendimas.

lg(x+0.2)-1 =
0

lg(x+0.2)-1 = 0 $lg(x+0.2)-1$ = 0

lg(x+0.2) = 0+1 $lg(x+0.2)$ = $0+1$

lg(x+0.2) = 1 $lg(x+0.2)$ = $1$

x+0.2 = 10^¹ $x+0.2$ = $10^{1}$

x = 10^¹-0.2 $x$ = $10^{1}-0.2$

$lg(x+0.2)-1$ = 0

$lg(x+0.2)$ = $1$

$x+0.2$ = $10^{1}$

$x$ = $9.8$

Atsakymas: x = 9.8

13 uždavinys15 uždavinys