"Prove each of the following using Mathematical induction;" show all steps(adsbygoogle = window.adsbygoogle || []).push({});

pleasee someone help.. i have a test on this tommorow and i just need some examples.. could you also try to show all steps including the words so i understand how you got there? thakns so much in advance~!

1. -1/2, -1/4, -1/8... -1/2^n = (1/(2^n))-1

2. a + (a+d)+(a+2d)+...+[a+(n-1)d] = (n/2)[2a+(n-1)d]

3. 1^3 + 2^3 + 3^3... + n^3 = (n^2(n+1)^2)/(4)

4. show that (3^(4n))-1 is dividislbe by 80 for all positive integral values of n

**Physics Forums - The Fusion of Science and Community**

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Helpp please =P

Loading...

Similar Threads - Helpp please | Date |
---|---|

I Help please with biocalculus question involving differentiation | Nov 4, 2017 |

I Please help with nth derivative question | Nov 2, 2017 |

I Can someone please help me simplify this expression.... | Jul 5, 2016 |

I Fourier Series: I don't understand where I am wrong -- please help | Jun 16, 2016 |

Problem of the week helpp | Dec 14, 2004 |

**Physics Forums - The Fusion of Science and Community**