представить в виде произведения: 2cosx+cos2x+cos4x. Created by Icansmile. algebra-ru

представить в виде произведения: 2cosx+cos2x+cos4x...

July 2022 1 13 Report

представить в виде произведения:

2cosx+cos2x+cos4x

Answers & Comments

lNT64 $cos \alpha +cos \beta =2*cos \frac{ \alpha + \beta }{2} *cos \frac{ \alpha - \beta }{2}$
$2cosx+2cos3x*cosx=2cosx(cosx+cos3x)=$
$=2cosx*2*cos2x*cosx=4 cos^{2}x*cos2x$

2 votes Thanks 5

chtoby ohladit chaj ispolzuyut sposob perelivat chaj iz odnoj chashki v druguyu po

Answer

Icansmile August 2022 | 0 Ответы

v treugolnike s osnovaniem 16sm provedena srednyaya liniya parallelnaya dannomu oe044977a89f4612898f431abc95c7ddc 19877

Answer

Icansmile August 2022 | 0 Ответы

esli iz pervogo chisla vychest summu vtorogo i tretego a rezultat uvelichit v61726f567539113ae55f100b177ab273 27144

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Icansmile July 2022 | 0 Ответы

dana arifmeticheskaya progressiya gde an2n 1 najdite summu eyo chlenov s 11 go po 2

Answer

Icansmile July 2022 | 0 Ответы

najdite summu vosmi pervyh chlenov arifmeticheskoj progressii xnesli h27h4 1

Answer

Icansmile July 2022 | 0 Ответы

reshit sistemu y x2 3x3 2x y 1 0

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Answers & Comments

chtoby ohladit chaj ispolzuyut sposob perelivat chaj iz odnoj chashki v druguyu po

v treugolnike s osnovaniem 16sm provedena srednyaya liniya parallelnaya dannomu oe044977a89f4612898f431abc95c7ddc 19877

na odnoj polke bylo v dva raza bolshe knig chem na drugoj kogda s pervoj polki

dokazhitechto chislo koren iz 3 ne yavlyaetsya kornem mnogochlenax5 x3 6x1

reshite neravenstva ap2 10p21lt0 bu2 8u16gt0 vq26q13gt0 g

vydelit kvadrat dvuchlena iz trehchlena ax2 2x5 b2h2 8x7

esli iz pervogo chisla vychest summu vtorogo i tretego a rezultat uvelichit v61726f567539113ae55f100b177ab273 27144

dana arifmeticheskaya progressiya gde an2n 1 najdite summu eyo chlenov s 11 go po 2

najdite summu vosmi pervyh chlenov arifmeticheskoj progressii xnesli h27h4 1

reshit sistemu y x2 3x3 2x y 1 0

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