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Find a general solution for the differential equation -y''=6x+xe^x (a) using the method of undetermined coefficients. (b) using variation of parameters
dy/dx + 4y= 8
- There are 49 dogs signed up for a dog show. There are 36 more small dogs than large dogs. How many small dogs have signed up to compete?
This question comes directly from a second grader's math homework.
1. Which pair of valence electron configuration represent two elements with similar chemical properties? a.1s²,3s² b.1s²,2s²2p¹ c.2s²,2s²2p⁶ d.2s²2p¹,2s²2p²
2. Which energy level within a group represents the biggest cationic size? a.n=1 b.n=2 c.n=3 d.n=4
3. What are the possible values of the magnetic quantum number? a.n b.0 to n-1 c.-l to +l d.+1/2, -1/2
determine the approximate age of a piece of burned wood, if it was found that 85.5% of the C-14 found in living trees of the same type had decayed.
It is claimed that the average weight of a bag of biscuits is 250 grams with a standard deviation of 20.5 grams. Would you agree to this claim if a random sample of 30 bags of biscuits showed an average weight of 240 grams, What is the tabular value if the level of significance is 5%?
1. a sample of helium gas contained in a balloon is warmed. if the balloon originally measures 1.5 L at 25 degree celsius, what is its volume at 85 degree celsius at constant pressure?
List five characteristics by Which compound can be distinguished from mixture ?
Evaluate the integral "\\int_0^2 e^{x^3}x^2dx".
find the total length of the curve r=4(1-sin theta) form theta = 90 degree to theta= 270 degree
