Express the Sum or Difference as a Product $$\sin \frac { 9 x } { 2 } + \sin \frac { 5 x } { 2 }$$

question 114

Multiple Choice

Express the sum or difference as a product.
- $$\sin \frac { 9 x } { 2 } + \sin \frac { 5 x } { 2 }$$

• A) \(2 \sin \frac { 7 x } { 2 } \cos x\)
• B) \(2 \sin \frac { 7 x } { 2 } \sin x\)
• C) \(2 \cos 7 x \sin x\)
• D) \(2 \sin 7 x\)

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Definitions:

Normal Color Vision

The ability to perceive colors accurately and differentiate between them, based on normal functioning of the cone cells in the retina.

Critical Period

A specific time in development during which an organism is particularly sensitive to environmental influences, outside of which such learning is significantly more difficult or even impossible.

Sensory Restriction

The limitation of normal sensory input, such as sight or hearing, which can lead to changes in perception or psychological state.

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A common eye condition where the lens becomes progressively opaque, leading to blurred vision and, in severe cases, blindness if left untreated.