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Question Number 74853 by Raxreedoroid last updated on 01/Dec/19

$$\mathrm{Is}\mathrm{it}\mathrm{possible}\mathrm{to}\mathrm{combine}2cos\left(90°x\right)+cos\left(180°x\right)$$$$\mathrm{into}\mathrm{a}\mathrm{form}\mathrm{of}a\cdot cos(b\cdot x+c)$$$$2cos\left(\frac{\pi }{2}x\right)+cos\left(\pi x\right)\stackrel{?}{=}a\cdot cos(bx+c)$$

Commented by mr W last updated on 01/Dec/19

$$no!$$

Commented by Raxreedoroid last updated on 01/Dec/19

$$\mathrm{Thanks}$$$$$$

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