# Challenge of the week-4

Solution will be uploaded next Sunday!

Got some study doubt? just GoSolveitNOW.com ♥

# Challenge-of-the-week-3

This Questions seems daunting but let’s put our thinking in order.

Let’s suppose that for some (n) there exist the desired numbers. we also assume that S1 <S2 <S3<…<Sn

surely S1 > 1 else (1- 1/S1) = 0

so we have 2 ≤ S1 ≤ S2–1 ≤ S3–2≤…Sn -(n-1) , hence Si ≥i+1 for each i = 1,2…n. Therefore

51/2010 = 17/670 =

# Let’s find the miniMa

So how do we approach this Q? one way is to have it as a function of (x) only and express it as

g(x) = x^x + (1-x)^(1-x) and then try to find the f’(x) =0 and solve the usual way… and you can see you’re headed to trouble. …

# How to use Quadratic here?

Q: Lets a and b be real numbers for which the equation x⁴ + ax³ + bx² +ax +1 = 0 has at least one real solution. For all such pairs (a, b), find the minimum value of a²+b².

A: As there is symmetry is the coefficients, first consider the…

# No Doubts about the AM-GM inequality

Shifu: Hello Po, it seems you’ve got a good challenge to solve… how do you plan to go about it?

Po: Master shifu, thanks but I guess there must be some tricks to solve it! I guess I should first get the expression in simplest form and then apply the…

# Quick and simple tips to crack IIT-JEE exam

Hey guys, it’s the time of your lives when everyone around you turns into an IIT-JEE-maverick, offering you advice about “How to crack it”.

The Internet gets flooded with people giving out a bulky list of dos and dont during the exam.

We, at SolveitNow, believe that all this complexity…

# No guessing for Gauss law

## Q: A charge of Q of + 10 micro Columb is placed on a hollow conducting sphere of radius R 5 cm. Find the electric field magnitude everywhere. What-if the spehere is SOLID? What if Non-conducting?

Shifu: How do we find the electric field?
Po: if it’s a point charge we use the formula KQ/r² otherwise we divide the charge into little pieces, find the electric field from each (as point charge), and add the electric fields (as vectors).

Shifu: So what’s the case here? …

# Say Hello to SolveitNOW

Think of it as a WhatsApp chat with a Physics ninja friend of yours or like a LinkedIn connect with your senior who was Maths champ and cracked IIT last year!

You also want to go to IIT and later to Stanford. Right? Yeah

We’ll show you how you can…

# Welcome to SolveitNOW

Solve ⊕ Challenge-your-friend with IIT/Olympiad level problems

Once upon a time, Ryan, a 12 grade student who aspires to study at IIT/Stanford got vexingly STUCK on a Physics problem. Ryan is NOT alone. Some 6.2 mn students in India, 8.1 …

## SolveitNOW.org

Peer-to-Peer problem-solving app to Excel in Maths & Science♥

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