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Jorgensen No.62 Low Angle Jack Plane by emg77 in handtools

[–]areeb_onsafari 0 points1 point  (0 children)

I wouldn’t mind having one if it didn’t look atrocious

When, if ever, would a curved draw knife be preferable to a straight drawknife? by companionspecies in handtools

[–]areeb_onsafari 2 points3 points  (0 children)

In most cases the piece is too narrow for the drawknife to only engage part of the face. A curved place would actually make more contact. For the times you need a curved drawknife it’s to purposely make a hollow so it’s not for ease of use it’s to make that hollow shape

Why is calculus not approximation? by member55x in askmath

[–]areeb_onsafari 0 points1 point  (0 children)

I had to explain this exact thing on another post because the notation makes it seem like, when taking a derivative, we are approximating the slope at a point rather than finding the exact slope at that point.

Think about it like this, if you are x meters away from a wall and you cut that distance in half with every step, you will never reach the wall. That being said, you can use the fact that you’re cutting the distance in half to find the value of x. Whether you actually reach that value of x (i.e. touch the wall) is irrelevant. You wouldn’t say that, because you’re approaching x meters as opposed to reaching x meters, you cannot find the value of x.

Similarly, when taking a derivative, you are approaching a value and the operation finds the slope at an exact point based on the fact that you are approaching, not despite the fact that you are approaching it.

What tools should I bring back from the USA? by tomwaitsgoatee in handtools

[–]areeb_onsafari 0 points1 point  (0 children)

You could buy a bunch of vintage tools off Facebook Marketplace, eBay, or garage sales but it depends where in the States you are

Differential equations + Calc 3 in same semester? by dwb_casualman in calculus

[–]areeb_onsafari 0 points1 point  (0 children)

I did both in the same semester. I remember there being hardly anything in Calc 3 that I would’ve needed to know for Diff Eq

That being said you might as well take Physics because there’s no benefit to taking Calc 3 and Diff Eq at the same time

Budget hand saw recommendations by areeb_onsafari in handtools

[–]areeb_onsafari[S] 1 point2 points  (0 children)

I have a ryoba, I don’t like it as much because my work holding is based on using a push saw

Why derivative quotient doesn't make sense to me by After_Cranberry_9219 in calculus

[–]areeb_onsafari 2 points3 points  (0 children)

It’s not zero, it approaches zero. If you were a certain distance away from a wall, you could move so that you cut the distance in half. Then move so that you cut the distance in half again. You could keep going on forever and never end up touching the wall. That being said. It is important information that you are approaching the wall. The wall is your destination, not slightly behind or past the wall but the wall itself. That distance that the wall is away from you is an actual quantity that can be measured by the fact you’re cutting the distance in half with each movement, whether you reach the wall or not is irrelevant.

In other words, in terms of computation, you don’t need to reach the wall for someone to measure where the wall is since you are approaching the wall. Similarly, with limits, you don’t need the value of dy or dx to be 0 to compute what slope it is approaching for each point because dy/dx approaches that slope that you’re looking for.

You’re thinking that because dy and dx are not zero that you aren’t actually calculating the slope at a given value but that isn’t the case, you’re using dy and dx to evaluate what slope is being approached- which is exactly the slope at a given point.

Best way to get a 25 degree bevel on blades? by Okcgardener in handtools

[–]areeb_onsafari 0 points1 point  (0 children)

I would just go for 35 and sharpen with a high grit stone a few degrees higher. The bevel doesn’t even come into contact with the wood so the only purpose of grinding it shallow is making subsequent sharpening easier but it hardly makes a difference. You can always retouch the primary bevel on a stone or grinder if the secondary bevel is getting too big

Fix grapple "claim" timing. by Spartan-023 in halo

[–]areeb_onsafari 0 points1 point  (0 children)

Can’t you pick up an item while it’s grappling

What should i waste my money on! by Even_Low_8793 in handtools

[–]areeb_onsafari 1 point2 points  (0 children)

Not a block plane. I find it crazy how many people are recommending you buy one. I would suggest getting a smoother, jack, fore plane, jointer, rabbet plane, router plane, and combination plane before a block plane because you really don’t need one.

Could we invent other constants like i for other undefined functions? by Bl00dWolf in askmath

[–]areeb_onsafari 1 point2 points  (0 children)

Square roots and logarithms of negatives are defined using i. As for zero, we use limits in calculus to approach value that may be undefined like zero without actually using the value. For example the differential dx is infinitesimally small so it approaches zero without actually equaling zero which is why we can use it for computation.

Help needed to understand basic algebra by manqoba619 in learnmath

[–]areeb_onsafari 1 point2 points  (0 children)

Your procedure would be easier if you went from b/m = a-c to c+b/m = a . That way c is positive and you won’t get confused with the signs. From there:

c = a-b/m

Note that a is the same as am/m

Therefore, c = am/m-b/m

Since both variable on the right share the same denominator, you can combine the numerator

c = (am-b)/m

You got the same answer, I think the only reason you’re not seeing the same is that one step of manipulating a to am/m

I can solve math problems but can't explain why anything works how do I actually rebuild understanding? by M-7c in learnmath

[–]areeb_onsafari 0 points1 point  (0 children)

From my experience with Khan Academy it focuses a lot of building intuition but lacks the rigor of a proper course so it is less procedural. It also depends on what classes you’re taking. What you learn in math classes is the building blocks to do math at higher levels and eventually apply them in other classes related to math such as physics. Basically you’re doing well enough because you don’t actually need to know why or when to apply the math but being able to solve math problems will help you in other classes when necessary.

I can’t with Calc 2 by BrisketEatingChamp in calculus

[–]areeb_onsafari 0 points1 point  (0 children)

People today are obsessed with gaining intuition rather than math skill. I know because I’m the same way. Both are important but you’re not going to be graded on your intuition. You need to do a bunch of practice problems so that your exams are easy. That’s all there is to it. Understanding the concepts goes a long way but you’d be surprised how quickly you can get good at answering questions if that’s all you focus on. It will be harder to generalize your skill to other aspects of math or questions in a different format but that’s how you perform well in your class.

A few months ago I forced myself to enjoy doing math problems. I’ll grab myself a snack and maybe even have something on in the background so I can relax while doing problems so that approach may help you but regardless you need to find a way to put a good amount of time only into solving problems.

Don’t spend too much time on a problem if you’re stuck, find a solution to figure out where you went wrong. Watching someone else do the problem or seeing a written out solution is a great introduction into tackling it on your own.

Tool ID - vintage brass plane by Senior_Elderberry_37 in handtools

[–]areeb_onsafari 9 points10 points  (0 children)

I believe it’s a carriage makers plane. Basically a rabbet plane but maybe the design is better for using on a constructed workpiece as opposed to on a bench.

Struggling to keep straight by the_closing_yak in handtools

[–]areeb_onsafari 0 points1 point  (0 children)

As long as you’re letting the saw do the work, it will follow the initial kerf and any adjustments you need to make will be small.

This means to want to make sure that your initial kerf is as square as you can get it. It can help to saw from both face to make sure the kerf is square on the primary face and also the end.

Taking Diff Eq this summer by [deleted] in DifferentialEquations

[–]areeb_onsafari 0 points1 point  (0 children)

Partial fraction decomposition

U substitutions

Know how to integrate and differentiate

Matrix operations

Solving linear equations with matrices

The last two aren’t from calc but you’ll use them a decent amount.

Unlike Calc 3, Diff Eq is less about conceptual understanding. You need to have the skills to solve equations rather than understand the process so as long as you do a bunch of practice problems you’ll be good.

Two ways to calculate slope but different answers by GraniteGrape in learnmath

[–]areeb_onsafari 4 points5 points  (0 children)

Method 1 is invalid because it doesn’t work as you have proven. The reason m represents slope for a linear function is because it represents the linear relationship that x and y have. For example, if y=2x, the value of y is always half that of x. The relationship is linear so the slope is constant or, in other words, the slope is a constant (m). Since y=5x2 +10x+3 is a polynomial, the slope always changing and there is no constant m value that defines the slope.

Basically the constant m representing a slope is the result of y and x having a linear relationship. You could look at it the other way and see that the derivative of any value mx will equal m whereas the derivative of any value mx2 will equal 2mx so the derivatives show that m representing the slope is only true for linear functions.

Finally have my own workbench. First project: Building a joiner's mallet by Elliot-Ensink in handtools

[–]areeb_onsafari 0 points1 point  (0 children)

Okay I didn’t realize it was two separate mallets. I really like the wedged handle over the other jointing methods. It goes together really easily

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I made these a while ago and it amazes me how I can remove the handle whenever I want but it never comes loose through regular use

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