Hvordan beregner du synd (2sin ^ -1 (10x))?

Hvordan beregner du synd (2sin ^ -1 (10x))?
Anonim

Svar:

#sin (2sin ^ (- 1) (10x)) = 20xsqrt (1-100x ^ 2) #

Forklaring:

# "Lad" y = synd (2sin ^ (- 1) (10x)) #

Lad nu # "" theta = sin ^ (- 1) (10x) "" => synd (theta) = 10x #

# => Y = sin (2-theta) = 2sinthetacostheta #

Husk at: # "" cos ^ 2theta = 1-sin ^ 2theta => costheta = sqrt (1-sin ^ 2theta) #

# => Y = 2sinthetasqrt (1-sin ^ 2-theta) #

# => Y = 2 * (10x) sqrt (1- (10x) ^ 2) = farve (blå) (20xsqrt (1-100x ^ 2)) #