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`x`²	`x`^□	log_□	√☐	^□√☐	≤	≥	□□	·	÷	`x`^◦	π
(☐)^′	`ddx`	∂∂`x`	∫	∫_□^□	lim	∑	∞	`θ`	(`f` ◦ `g`)	`f`(`x`)

Solutions > Sequences Sum Calculator >

sequence sum a_{1}=-2, d=3

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`x`²	`x`^□	log_□	√☐	^□√☐	≤	≥	□□	·	÷	`x`^◦	π
(☐)^′	`ddx`	∂∂`x`	∫	∫_□^□	lim	∑	∞	`θ`	(`f` ◦ `g`)	`f`(`x`)

☐²

x^☐

√☐

^□√☐

□□

log_□

π

θ

∞

∫

ddx

≥	≤	·	÷	`x`^◦	(☐)	\|☐\|	(`f` ◦ `g`)	`f`(`x`)	ln	`e`^☐
(☐)^′	∂∂`x`	∫_□^□	lim	∑	sin	cos	tan	cot	csc	sec

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ln(x)+ln(x−1)=ln(3x+12)

Solution

x=6

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ln(x)+ln(x−1)=ln(3x+12)

Áp dụng quy tắc lôgarit

x(x−1)=3x+12

Giải x(x−1)=3x+12: x=6, x=−2

x=6, x=−2

Xác minh lời giải: x=6 Đúng, x=−2 Sai

Giải pháp là

x=6

Sequences Sum Examples

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