- Intergrate cos 2x / (cos x + sin x ) ?

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If h= planck’s constant, the de brigle wavelength...? Calculate the intensity level of sound in decibels at a distance of 5 m from the sound source where the power of sound is 8 pico W/m2.? How much will it cost to send a human to Mars? Given that x is a normal variable with mean μ = 49 and standard deviation σ = 7.1, find the following probabilities. P(x ≤ 60)? If you use multiple Lithium Ion battery packs in series do the amps stack or just the volts?